match limit场景查询性能慢

nebula 版本:2.0GA
部署方式(单机 ):集群 50台
是否为线上版本:N
硬件信息:
磁盘: SATA 8T*12快盘
CPU: Intel® Xeon® CPU E5-2630 v4 @ 2.20GHz (40core)
内存信息 125g
顶点:8百亿
边:9百亿

  • 问题的具体描述

测试MATCH 在limit查询场景特别慢,查询数据范围在5w条,现在limit返回1000,查询时间在MATCH:1.9s,go limit 0.25s,go limit fetch 0.064s

MATCH LIMIT

(a@nebula) [sec_graph]> profile match (v)-[e:subdomain]->(v2) where id(v)=='70f914f5e82f7de736efe2f25c259607' with id(v2) as id limit 1000 return count(*);
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 1894660/1894479 us)

GO LIMIT

(a@nebula) [sec_graph]> profile GO 1 STEPS FROM '70f914f5e82f7de736efe2f25c259607' OVER subdomain  BIDIRECT yield $$.domain.name|limit 1000|yield count(*)
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 250324/250809 us)

GO LIMIT FETCH

(a@nebula) [sec_graph]> profile GO 1 STEPS FROM '70f914f5e82f7de736efe2f25c259607' OVER subdomain  BIDIRECT yield subdomain._dst as vid|limit 1000|fetch prop on * $-.vid|yield count(*)
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 63300/63762 us)

MATCH查询时间在秒级以上,相较于GO查询时间太长。希望能进行相应优化,nGQL稍微复杂点的查询场景不易编写,比如查询顶点扩展的所有类型边和顶点属性。

希望的优化点:

  1. LIMIT能够下沉到GetNeighbors阶段
  2. MATCH能根据RETURN的属性过滤掉不需要的属性字段,减少中间传输数据量
  3. 优化下InnerJoin,减少不必要操作

执行计划:
MATCH LIMIT

(a@nebula) [sec_graph]> profile match (v)-[e:subdomain]->(v2) where id(v)=='70f914f5e82f7de736efe2f25c259607' with id(v2) as id limit 1000 return count(*);
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 1894660/1894479 us)

Execution Plan (optimize time 85 us)

-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| id | name         | dependencies | profiling data                                                     | operator info                                              |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 17 | Aggregate    | 16           | ver: 0, rows: 1, execTime: 214us, totalTime: 215us                 | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "COUNT(*)"                                           |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Aggregate_17",                              |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Limit_16                                       |
|    |              |              |                                                                    | groupKeys: []                                              |
|    |              |              |                                                                    | groupItems: [                                              |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "expr": "COUNT(*)"                                     |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 16 | Limit        | 15           | ver: 0, rows: 1000, execTime: 2833us, totalTime: 2834us            | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "id"                                                 |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Limit_16",                                  |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Project_15                                     |
|    |              |              |                                                                    | offset: 0                                                  |
|    |              |              |                                                                    | count: 1000                                                |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 15 | Project      | 14           | ver: 0, rows: 50730, execTime: 43776us, totalTime: 43779us         | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "id"                                                 |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Project_15",                                |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Filter_14                                      |
|    |              |              |                                                                    | columns: [                                                 |
|    |              |              |                                                                    |   "id($v2)"                                                |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 14 | Filter       | 13           | ver: 0, rows: 50730, execTime: 35418us, totalTime: 35424us         | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "v",                                                 |
|    |              |              |                                                                    |       "e",                                                 |
|    |              |              |                                                                    |       "v2",                                                |
|    |              |              |                                                                    |       "__COL_0"                                            |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Filter_14",                                 |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Filter_13                                      |
|    |              |              |                                                                    | condition: (id($v)=="70f914f5e82f7de736efe2f25c259607")    |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 13 | Filter       | 12           | ver: 0, rows: 50730, execTime: 76894us, totalTime: 76897us         | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "v",                                                 |
|    |              |              |                                                                    |       "e",                                                 |
|    |              |              |                                                                    |       "v2",                                                |
|    |              |              |                                                                    |       "__COL_0"                                            |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Filter_13",                                 |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Project_12                                     |
|    |              |              |                                                                    | condition: (hasSameEdgeInPath($-.__COL_0)==false)          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 12 | Project      | 11           | ver: 0, rows: 50730, execTime: 604512us, totalTime: 604518us       | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "v",                                                 |
|    |              |              |                                                                    |       "e",                                                 |
|    |              |              |                                                                    |       "v2",                                                |
|    |              |              |                                                                    |       "__COL_0"                                            |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Project_12",                                |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __InnerJoin_11                                   |
|    |              |              |                                                                    | columns: [                                                 |
|    |              |              |                                                                    |   "startNode($-._path_0) AS v",                            |
|    |              |              |                                                                    |   "relationships($-._path_0)[0] AS e",                     |
|    |              |              |                                                                    |   "startNode($-._path_1) AS v2",                           |
|    |              |              |                                                                    |   "PathBuild[PathBuild[$-._path_0,$-._path_1]] AS __COL_0" |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 11 | InnerJoin    | 10           | ver: 0, rows: 50730, execTime: 289764us, totalTime: 289769us       | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "_path_0",                                           |
|    |              |              |                                                                    |       "_path_1"                                            |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__InnerJoin_11",                              |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: {                                                |
|    |              |              |                                                                    |   "rightVar": {                                            |
|    |              |              |                                                                    |     "__Project_10": "0"                                    |
|    |              |              |                                                                    |   },                                                       |
|    |              |              |                                                                    |   "leftVar": {                                             |
|    |              |              |                                                                    |     "__Filter_6": "0"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | }                                                          |
|    |              |              |                                                                    | hashKeys: [                                                |
|    |              |              |                                                                    |   "endNode($-._path)._vid"                                 |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | probeKeys: [                                               |
|    |              |              |                                                                    |   "startNode($-._path)._vid"                               |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | kind: InnerJoin                                            |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 10 | Project      | 19           | ver: 0, rows: 50730, execTime: 76149us, totalTime: 76153us         | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "_path"                                              |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Project_10",                                |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __GetVertices_9                                  |
|    |              |              |                                                                    | columns: [                                                 |
|    |              |              |                                                                    |   "PathBuild[VERTEX]"                                      |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 19 | GetVertices  | 6            | {                                                                  | outputVar: [                                               |
|    |              |              | ver: 0, rows: 50730, execTime: 134696us, totalTime: 185916us       |   {                                                        |
|    |              |              | "10.251.11.133":9779 exec/total: 52956(us)/55034(us)               |     "colNames": [],                                        |
|    |              |              | "10.251.11.113":9779 exec/total: 11686(us)/13480(us)               |     "name": "__GetVertices_9",                             |
|    |              |              | total_rpc: 92315(us)                                               |     "type": "DATASET"                                      |
|    |              |              | "10.251.11.168":9779 exec/total: 21063(us)/23612(us)               |   }                                                        |
|    |              |              | "10.251.11.145":9779 exec/total: 19603(us)/22565(us)               | ]                                                          |
|    |              |              | "10.251.11.142":9779 exec/total: 20115(us)/23165(us)               | inputVar: __Filter_6                                       |
|    |              |              | "10.251.11.147":9779 exec/total: 6517(us)/7884(us)                 | space: 1                                                   |
|    |              |              | "10.251.11.174":9779 exec/total: 14996(us)/17310(us)               | dedup: true                                                |
|    |              |              | "10.251.11.143":9779 exec/total: 13760(us)/16573(us)               | limit: 9223372036854775807                                 |
|    |              |              | "10.251.11.171":9779 exec/total: 12945(us)/15490(us)               | filter:                                                    |
|    |              |              | "10.251.11.139":9779 exec/total: 16520(us)/19432(us)               | orderBy: []                                                |
|    |              |              | "10.251.11.180":9779 exec/total: 28257(us)/32181(us)               | src: endNode($-._path)._vid                                |
|    |              |              | "10.251.11.149":9779 exec/total: 29696(us)/33502(us)               | props: [                                                   |
|    |              |              | "10.251.11.172":9779 exec/total: 12264(us)/15250(us)               |   {                                                        |
|    |              |              | "10.251.11.169":9779 exec/total: 15651(us)/18461(us)               |     "props": [                                             |
|    |              |              | "10.251.11.165":9779 exec/total: 16080(us)/18413(us)               |       "name",                                              |
|    |              |              | "10.251.11.111":9779 exec/total: 20751(us)/23758(us)               |       "_tag"                                               |
|    |              |              | "10.251.11.179":9779 exec/total: 14278(us)/16720(us)               |     ],                                                     |
|    |              |              | "10.251.11.141":9779 exec/total: 9824(us)/11582(us)                |     "tagId": 2                                             |
|    |              |              | "10.251.11.167":9779 exec/total: 12532(us)/14180(us)               |   },                                                       |
|    |              |              | "10.251.11.132":9779 exec/total: 25062(us)/28589(us)               |   {                                                        |
|    |              |              | "10.251.11.178":9779 exec/total: 16853(us)/19338(us)               |     "props": [                                             |
|    |              |              | "10.251.11.176":9779 exec/total: 26711(us)/29519(us)               |       "name",                                              |
|    |              |              | "10.251.11.137":9779 exec/total: 21105(us)/23491(us)               |       "_tag"                                               |
|    |              |              | "10.251.11.135":9779 exec/total: 33359(us)/36636(us)               |     ],                                                     |
|    |              |              | "10.251.11.110":9779 exec/total: 12629(us)/15055(us)               |     "tagId": 3                                             |
|    |              |              | "10.251.11.148":9779 exec/total: 24458(us)/27376(us)               |   }                                                        |
|    |              |              | "10.251.11.131":9779 exec/total: 28942(us)/32241(us)               | ]                                                          |
|    |              |              | "10.251.11.136":9779 exec/total: 17495(us)/19256(us)               | exprs: []                                                  |
|    |              |              | "10.251.11.181":9779 exec/total: 5463(us)/6766(us)                 |                                                            |
|    |              |              | "10.251.11.177":9779 exec/total: 10636(us)/12278(us)               |                                                            |
|    |              |              | "10.251.11.175":9779 exec/total: 16794(us)/19277(us)               |                                                            |
|    |              |              | "10.251.11.144":9779 exec/total: 17571(us)/20978(us)               |                                                            |
|    |              |              | "10.251.11.146":9779 exec/total: 18100(us)/21358(us)               |                                                            |
|    |              |              | "10.251.11.170":9779 exec/total: 12551(us)/14786(us)               |                                                            |
|    |              |              | "10.251.11.134":9779 exec/total: 16682(us)/20655(us)               |                                                            |
|    |              |              | "10.251.11.109":9779 exec/total: 20421(us)/23012(us)               |                                                            |
|    |              |              | "10.251.11.164":9779 exec/total: 25478(us)/28996(us)               |                                                            |
|    |              |              | "10.251.11.138":9779 exec/total: 29683(us)/32857(us)               |                                                            |
|    |              |              | "10.251.11.140":9779 exec/total: 24742(us)/28005(us)               |                                                            |
|    |              |              | "10.251.11.117":9779 exec/total: 13276(us)/15397(us)               |                                                            |
|    |              |              | "10.251.11.114":9779 exec/total: 7495(us)/9684(us)                 |                                                            |
|    |              |              | "10.251.11.118":9779 exec/total: 6096(us)/7549(us)                 |                                                            |
|    |              |              | "10.251.11.173":9779 exec/total: 18639(us)/22393(us)               |                                                            |
|    |              |              | "10.251.11.108":9779 exec/total: 12786(us)/14100(us)               |                                                            |
|    |              |              | "10.251.11.166":9779 exec/total: 20256(us)/22935(us)               |                                                            |
|    |              |              | "10.251.11.130":9779 exec/total: 18742(us)/21468(us)               |                                                            |
|    |              |              | "10.251.11.116":9779 exec/total: 12725(us)/15238(us)               |                                                            |
|    |              |              | "10.251.11.115":9779 exec/total: 20641(us)/24810(us)               |                                                            |
|    |              |              | "10.251.11.163":9779 exec/total: 8042(us)/10094(us)                |                                                            |
|    |              |              | "10.251.11.112":9779 exec/total: 14835(us)/17718(us)               |                                                            |
|    |              |              | }                                                                  |                                                            |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
|  6 | Filter       | 5            | ver: 0, rows: 50740, execTime: 84699us, totalTime: 84702us         | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "_path"                                              |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Filter_6",                                  |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __Project_5                                      |
|    |              |              |                                                                    | condition: (length($-._path)>=1)                           |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
|  5 | Project      | 21           | ver: 0, rows: 50740, execTime: 291642us, totalTime: 291647us       | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "_path"                                              |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__Project_5",                                 |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __GetNeighbors_4                                 |
|    |              |              |                                                                    | columns: [                                                 |
|    |              |              |                                                                    |   "PathBuild[VERTEX,EDGE] AS _path"                        |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
| 21 | GetNeighbors | 1            | {                                                                  | outputVar: [                                               |
|    |              |              | ver: 0, rows: 0, execTime: 92us, totalTime: 180067us               |   {                                                        |
|    |              |              | "10.251.11.109":9779 exec/total/vertices: 100681(us)/179814(us)/1, |     "colNames": [],                                        |
|    |              |              | total_rpc_time: 179929(us)                                         |     "name": "__GetNeighbors_4",                            |
|    |              |              | }                                                                  |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar: __VAR_1                                          |
|    |              |              |                                                                    | space: 1                                                   |
|    |              |              |                                                                    | dedup: true                                                |
|    |              |              |                                                                    | limit: -1                                                  |
|    |              |              |                                                                    | filter:                                                    |
|    |              |              |                                                                    | orderBy: []                                                |
|    |              |              |                                                                    | src: $__VAR_1._vid                                         |
|    |              |              |                                                                    | edgeTypes: []                                              |
|    |              |              |                                                                    | edgeDirection: OUT_EDGE                                    |
|    |              |              |                                                                    | vertexProps: []                                            |
|    |              |              |                                                                    | edgeProps: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "props": [                                             |
|    |              |              |                                                                    |       "_src",                                              |
|    |              |              |                                                                    |       "_type",                                             |
|    |              |              |                                                                    |       "_rank",                                             |
|    |              |              |                                                                    |       "_dst",                                              |
|    |              |              |                                                                    |       "count",                                             |
|    |              |              |                                                                    |       "updatetime",                                        |
|    |              |              |                                                                    |       "label",                                             |
|    |              |              |                                                                    |       "first_seen",                                        |
|    |              |              |                                                                    |       "type",                                              |
|    |              |              |                                                                    |       "last_seen"                                          |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "type": "4"                                            |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | statProps:                                                 |
|    |              |              |                                                                    | exprs:                                                     |
|    |              |              |                                                                    | random: false                                              |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
|  1 | PassThrough  | 0            | ver: 0, rows: 0, execTime: 2us, totalTime: 3us                     | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [                                          |
|    |              |              |                                                                    |       "_vid"                                               |
|    |              |              |                                                                    |     ],                                                     |
|    |              |              |                                                                    |     "name": "__VAR_1",                                     |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
|    |              |              |                                                                    | inputVar:                                                  |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------
|  0 | Start        |              | ver: 0, rows: 0, execTime: 1us, totalTime: 50us                    | outputVar: [                                               |
|    |              |              |                                                                    |   {                                                        |
|    |              |              |                                                                    |     "colNames": [],                                        |
|    |              |              |                                                                    |     "name": "__Start_0",                                   |
|    |              |              |                                                                    |     "type": "DATASET"                                      |
|    |              |              |                                                                    |   }                                                        |
|    |              |              |                                                                    | ]                                                          |
-----+--------------+--------------+--------------------------------------------------------------------+-------------------------------------------------------------

GO LIMIT

a@nebula) [sec_graph]> profile GO 1 STEPS FROM '70f914f5e82f7de736efe2f25c259607' OVER subdomain  BIDIRECT yield $$.domain.name|limit 1000|yield count(*)
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 250324/250809 us)

Execution Plan (optimize time 43 us)

-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
| id | name         | dependencies | profiling data                                                   | operator info                        |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  8 | Aggregate    | 7            | ver: 0, rows: 1, execTime: 204us, totalTime: 205us               | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "COUNT(*)"                     |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__Aggregate_8",         |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __Limit_7                  |
|    |              |              |                                                                  | groupKeys: []                        |
|    |              |              |                                                                  | groupItems: [                        |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "expr": "COUNT(*)"               |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  7 | Limit        | 6            | ver: 0, rows: 1000, execTime: 2720us, totalTime: 2722us          | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "$$.domain.name"               |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__Limit_7",             |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __Project_6                |
|    |              |              |                                                                  | offset: 0                            |
|    |              |              |                                                                  | count: 1000                          |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  6 | Project      | 5            | ver: 0, rows: 50740, execTime: 8250us, totalTime: 8251us         | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "$$.domain.name"               |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__Project_6",           |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __LeftJoin_5               |
|    |              |              |                                                                  | columns: [                           |
|    |              |              |                                                                  |   "$-.__COL_0"                       |
|    |              |              |                                                                  | ]                                    |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  5 | LeftJoin     | 4            | ver: 0, rows: 50740, execTime: 63314us, totalTime: 63318us       | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "__COL_1",                     |
|    |              |              |                                                                  |       "__COL_0",                     |
|    |              |              |                                                                  |       "__COL_2"                      |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__LeftJoin_5",          |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: {                          |
|    |              |              |                                                                  |   "rightVar": {                      |
|    |              |              |                                                                  |     "__Project_4": "0"               |
|    |              |              |                                                                  |   },                                 |
|    |              |              |                                                                  |   "leftVar": {                       |
|    |              |              |                                                                  |     "__Project_2": "0"               |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | }                                    |
|    |              |              |                                                                  | hashKeys: [                          |
|    |              |              |                                                                  |   "$__Project_2.__COL_1"             |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | probeKeys: [                         |
|    |              |              |                                                                  |   "$__Project_4.__COL_2"             |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | kind: LeftJoin                       |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  4 | Project      | 3            | ver: 0, rows: 50730, execTime: 24186us, totalTime: 24190us       | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "__COL_0",                     |
|    |              |              |                                                                  |       "__COL_2"                      |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__Project_4",           |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __GetVertices_3            |
|    |              |              |                                                                  | columns: [                           |
|    |              |              |                                                                  |   "$$.domain.name AS __COL_0",       |
|    |              |              |                                                                  |   "$__GetVertices_3._vid AS __COL_2" |
|    |              |              |                                                                  | ]                                    |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  3 | GetVertices  | 2            | {                                                                | outputVar: [                         |
|    |              |              | ver: 0, rows: 50730, execTime: 70334us, totalTime: 77932us       |   {                                  |
|    |              |              | "10.251.11.177":9779 exec/total: 1279(us)/2629(us)               |     "colNames": [],                  |
|    |              |              | "10.251.11.141":9779 exec/total: 2707(us)/4689(us)               |     "name": "__GetVertices_3",       |
|    |              |              | "10.251.11.113":9779 exec/total: 2102(us)/3812(us)               |     "type": "DATASET"                |
|    |              |              | "10.251.11.173":9779 exec/total: 3809(us)/6605(us)               |   }                                  |
|    |              |              | "10.251.11.176":9779 exec/total: 2791(us)/8959(us)               | ]                                    |
|    |              |              | "10.251.11.180":9779 exec/total: 4991(us)/11137(us)              | inputVar: __Project_2                |
|    |              |              | "10.251.11.111":9779 exec/total: 2786(us)/10720(us)              | space: 1                             |
|    |              |              | "10.251.11.143":9779 exec/total: 2863(us)/5275(us)               | dedup: true                          |
|    |              |              | "10.251.11.135":9779 exec/total: 2853(us)/10324(us)              | limit: 9223372036854775807           |
|    |              |              | "10.251.11.110":9779 exec/total: 2002(us)/4577(us)               | filter:                              |
|    |              |              | "10.251.11.133":9779 exec/total: 2234(us)/4094(us)               | orderBy: []                          |
|    |              |              | "10.251.11.115":9779 exec/total: 3729(us)/7817(us)               | src: $__Project_2.__COL_1            |
|    |              |              | "10.251.11.140":9779 exec/total: 3617(us)/8363(us)               | props: [                             |
|    |              |              | "10.251.11.146":9779 exec/total: 3408(us)/7768(us)               |   {}                                 |
|    |              |              | "10.251.11.112":9779 exec/total: 3433(us)/7639(us)               | ]                                    |
|    |              |              | "10.251.11.109":9779 exec/total: 4580(us)/12046(us)              | exprs: []                            |
|    |              |              | "10.251.11.170":9779 exec/total: 1992(us)/4273(us)               |                                      |
|    |              |              | "10.251.11.175":9779 exec/total: 2448(us)/5156(us)               |                                      |
|    |              |              | "10.251.11.118":9779 exec/total: 979(us)/2712(us)                |                                      |
|    |              |              | "10.251.11.181":9779 exec/total: 894(us)/2082(us)                |                                      |
|    |              |              | "10.251.11.149":9779 exec/total: 4733(us)/10003(us)              |                                      |
|    |              |              | "10.251.11.139":9779 exec/total: 3067(us)/7123(us)               |                                      |
|    |              |              | "10.251.11.168":9779 exec/total: 2733(us)/5603(us)               |                                      |
|    |              |              | "10.251.11.134":9779 exec/total: 2797(us)/9395(us)               |                                      |
|    |              |              | "10.251.11.172":9779 exec/total: 2820(us)/5369(us)               |                                      |
|    |              |              | "10.251.11.166":9779 exec/total: 2411(us)/5241(us)               |                                      |
|    |              |              | "10.251.11.165":9779 exec/total: 3135(us)/10174(us)              |                                      |
|    |              |              | "10.251.11.108":9779 exec/total: 1661(us)/3096(us)               |                                      |
|    |              |              | "10.251.11.132":9779 exec/total: 3909(us)/7932(us)               |                                      |
|    |              |              | total_rpc: 50262(us)                                             |                                      |
|    |              |              | "10.251.11.164":9779 exec/total: 3446(us)/6690(us)               |                                      |
|    |              |              | "10.251.11.178":9779 exec/total: 2943(us)/10516(us)              |                                      |
|    |              |              | "10.251.11.117":9779 exec/total: 4089(us)/5847(us)               |                                      |
|    |              |              | "10.251.11.136":9779 exec/total: 1957(us)/4307(us)               |                                      |
|    |              |              | "10.251.11.163":9779 exec/total: 1718(us)/3129(us)               |                                      |
|    |              |              | "10.251.11.167":9779 exec/total: 1883(us)/3586(us)               |                                      |
|    |              |              | "10.251.11.171":9779 exec/total: 2159(us)/5744(us)               |                                      |
|    |              |              | "10.251.11.116":9779 exec/total: 2173(us)/5503(us)               |                                      |
|    |              |              | "10.251.11.179":9779 exec/total: 3013(us)/6657(us)               |                                      |
|    |              |              | "10.251.11.142":9779 exec/total: 3870(us)/7819(us)               |                                      |
|    |              |              | "10.251.11.145":9779 exec/total: 3406(us)/7805(us)               |                                      |
|    |              |              | "10.251.11.114":9779 exec/total: 1219(us)/2673(us)               |                                      |
|    |              |              | "10.251.11.144":9779 exec/total: 3520(us)/8167(us)               |                                      |
|    |              |              | "10.251.11.138":9779 exec/total: 4020(us)/9091(us)               |                                      |
|    |              |              | "10.251.11.148":9779 exec/total: 5123(us)/10638(us)              |                                      |
|    |              |              | "10.251.11.137":9779 exec/total: 2539(us)/4710(us)               |                                      |
|    |              |              | "10.251.11.169":9779 exec/total: 2840(us)/6722(us)               |                                      |
|    |              |              | "10.251.11.147":9779 exec/total: 1348(us)/2487(us)               |                                      |
|    |              |              | "10.251.11.174":9779 exec/total: 3367(us)/7593(us)               |                                      |
|    |              |              | "10.251.11.131":9779 exec/total: 4099(us)/8484(us)               |                                      |
|    |              |              | "10.251.11.130":9779 exec/total: 3494(us)/8248(us)               |                                      |
|    |              |              | }                                                                |                                      |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  2 | Project      | 1            | ver: 0, rows: 50740, execTime: 18419us, totalTime: 18422us       | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [                    |
|    |              |              |                                                                  |       "__COL_1"                      |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "name": "__Project_2",           |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __GetNeighbors_1           |
|    |              |              |                                                                  | columns: [                           |
|    |              |              |                                                                  |   "*._dst AS __COL_1"                |
|    |              |              |                                                                  | ]                                    |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  1 | GetNeighbors | 0            | {                                                                | outputVar: [                         |
|    |              |              | ver: 0, rows: 0, execTime: 75us, totalTime: 54769us              |   {                                  |
|    |              |              | "10.251.11.109":9779 exec/total/vertices: 33410(us)/54548(us)/1, |     "colNames": [],                  |
|    |              |              | total_rpc_time: 54665(us)                                        |     "name": "__GetNeighbors_1",      |
|    |              |              | }                                                                |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | inputVar: __VAR_1                    |
|    |              |              |                                                                  | space: 1                             |
|    |              |              |                                                                  | dedup: false                         |
|    |              |              |                                                                  | limit: -1                            |
|    |              |              |                                                                  | filter:                              |
|    |              |              |                                                                  | orderBy: []                          |
|    |              |              |                                                                  | src: $__VAR_1._vid                   |
|    |              |              |                                                                  | edgeTypes: []                        |
|    |              |              |                                                                  | edgeDirection: OUT_EDGE              |
|    |              |              |                                                                  | vertexProps:                         |
|    |              |              |                                                                  | edgeProps: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "props": [                       |
|    |              |              |                                                                  |       "_dst"                         |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "type": "4"                      |
|    |              |              |                                                                  |   },                                 |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "props": [                       |
|    |              |              |                                                                  |       "_dst"                         |
|    |              |              |                                                                  |     ],                               |
|    |              |              |                                                                  |     "type": "-4"                     |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
|    |              |              |                                                                  | statProps:                           |
|    |              |              |                                                                  | exprs:                               |
|    |              |              |                                                                  | random: false                        |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------
|  0 | Start        |              | ver: 0, rows: 0, execTime: 1us, totalTime: 33us                  | outputVar: [                         |
|    |              |              |                                                                  |   {                                  |
|    |              |              |                                                                  |     "colNames": [],                  |
|    |              |              |                                                                  |     "name": "__Start_0",             |
|    |              |              |                                                                  |     "type": "DATASET"                |
|    |              |              |                                                                  |   }                                  |
|    |              |              |                                                                  | ]                                    |
-----+--------------+--------------+------------------------------------------------------------------+---------------------------------------

GO LIMIT FETCH

(a@nebula) [sec_graph]> profile GO 1 STEPS FROM '70f914f5e82f7de736efe2f25c259607' OVER subdomain  BIDIRECT yield subdomain._dst as vid|limit 1000|fetch prop on * $-.vid|yield count(*)
+----------+
| COUNT(*) |
+----------+
| 1000     |
+----------+
Got 1 rows (time spent 63300/63762 us)

Execution Plan (optimize time 1067 us)

-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
| id | name         | dependencies | profiling data                                                 | operator info                   |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  6 | Aggregate    | 5            | ver: 0, rows: 1, execTime: 200us, totalTime: 200us             | outputVar: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "colNames": [               |
|    |              |              |                                                                |       "COUNT(*)"                |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "name": "__Aggregate_6",    |
|    |              |              |                                                                |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | inputVar: __Project_5           |
|    |              |              |                                                                | groupKeys: []                   |
|    |              |              |                                                                | groupItems: [                   |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "expr": "COUNT(*)"          |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  5 | Project      | 4            | ver: 0, rows: 1000, execTime: 1141us, totalTime: 1142us        | outputVar: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "colNames": [               |
|    |              |              |                                                                |       "vertices_"               |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "name": "__Project_5",      |
|    |              |              |                                                                |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | inputVar: __GetVertices_4       |
|    |              |              |                                                                | columns: [                      |
|    |              |              |                                                                |   "VERTEX AS vertices_"         |
|    |              |              |                                                                | ]                               |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  4 | GetVertices  | 7            | {                                                              | outputVar: [                    |
|    |              |              | ver: 0, rows: 1000, execTime: 2374us, totalTime: 21634us       |   {                             |
|    |              |              | "10.251.11.109":9779 exec/total: 1025(us)/1433(us)             |     "colNames": [               |
|    |              |              | total_rpc: 21004(us)                                           |       "_vid",                   |
|    |              |              | "10.251.11.167":9779 exec/total: 608(us)/994(us)               |       "domain.name",            |
|    |              |              | "10.251.11.132":9779 exec/total: 1668(us)/4020(us)             |       "domain._tag",            |
|    |              |              | "10.251.11.131":9779 exec/total: 1916(us)/4154(us)             |       "ip.name",                |
|    |              |              | "10.251.11.141":9779 exec/total: 716(us)/4083(us)              |       "ip._tag"                 |
|    |              |              | "10.251.11.176":9779 exec/total: 1096(us)/3964(us)             |     ],                          |
|    |              |              | "10.251.11.140":9779 exec/total: 1706(us)/4302(us)             |     "name": "__GetVertices_4",  |
|    |              |              | "10.251.11.137":9779 exec/total: 774(us)/1460(us)              |     "type": "DATASET"           |
|    |              |              | "10.251.11.177":9779 exec/total: 572(us)/935(us)               |   }                             |
|    |              |              | "10.251.11.173":9779 exec/total: 1260(us)/4190(us)             | ]                               |
|    |              |              | "10.251.11.113":9779 exec/total: 428(us)/1410(us)              | inputVar: __Limit_3             |
|    |              |              | "10.251.11.144":9779 exec/total: 1120(us)/3999(us)             | space: 1                        |
|    |              |              | "10.251.11.175":9779 exec/total: 1382(us)/4033(us)             | dedup: false                    |
|    |              |              | "10.251.11.115":9779 exec/total: 1551(us)/4177(us)             | limit: 9223372036854775807      |
|    |              |              | "10.251.11.148":9779 exec/total: 5384(us)/6088(us)             | filter:                         |
|    |              |              | "10.251.11.165":9779 exec/total: 1176(us)/4042(us)             | orderBy: []                     |
|    |              |              | "10.251.11.108":9779 exec/total: 1261(us)/4020(us)             | src: $-.vid                     |
|    |              |              | "10.251.11.130":9779 exec/total: 2952(us)/4220(us)             | props: [                        |
|    |              |              | "10.251.11.179":9779 exec/total: 951(us)/4210(us)              |   {                             |
|    |              |              | "10.251.11.181":9779 exec/total: 510(us)/867(us)               |     "props": [                  |
|    |              |              | "10.251.11.169":9779 exec/total: 1073(us)/4181(us)             |       "name",                   |
|    |              |              | "10.251.11.142":9779 exec/total: 1260(us)/4149(us)             |       "_tag"                    |
|    |              |              | "10.251.11.178":9779 exec/total: 945(us)/4402(us)              |     ],                          |
|    |              |              | "10.251.11.134":9779 exec/total: 1216(us)/4200(us)             |     "tagId": 2                  |
|    |              |              | "10.251.11.133":9779 exec/total: 18172(us)/19585(us)           |   },                            |
|    |              |              | "10.251.11.118":9779 exec/total: 302(us)/723(us)               |   {                             |
|    |              |              | "10.251.11.145":9779 exec/total: 2916(us)/4403(us)             |     "props": [                  |
|    |              |              | "10.251.11.147":9779 exec/total: 322(us)/950(us)               |       "name",                   |
|    |              |              | "10.251.11.117":9779 exec/total: 1638(us)/4233(us)             |       "_tag"                    |
|    |              |              | "10.251.11.174":9779 exec/total: 883(us)/1345(us)              |     ],                          |
|    |              |              | "10.251.11.149":9779 exec/total: 1509(us)/4416(us)             |     "tagId": 3                  |
|    |              |              | "10.251.11.143":9779 exec/total: 1513(us)/4391(us)             |   }                             |
|    |              |              | "10.251.11.116":9779 exec/total: 1053(us)/3915(us)             | ]                               |
|    |              |              | "10.251.11.172":9779 exec/total: 1008(us)/4153(us)             | exprs: []                       |
|    |              |              | "10.251.11.168":9779 exec/total: 1369(us)/4193(us)             |                                 |
|    |              |              | "10.251.11.136":9779 exec/total: 3710(us)/4388(us)             |                                 |
|    |              |              | "10.251.11.180":9779 exec/total: 1340(us)/4060(us)             |                                 |
|    |              |              | "10.251.11.166":9779 exec/total: 1445(us)/4045(us)             |                                 |
|    |              |              | "10.251.11.139":9779 exec/total: 830(us)/4151(us)              |                                 |
|    |              |              | "10.251.11.111":9779 exec/total: 1644(us)/4201(us)             |                                 |
|    |              |              | "10.251.11.114":9779 exec/total: 593(us)/1012(us)              |                                 |
|    |              |              | "10.251.11.170":9779 exec/total: 722(us)/3823(us)              |                                 |
|    |              |              | "10.251.11.146":9779 exec/total: 981(us)/3884(us)              |                                 |
|    |              |              | "10.251.11.164":9779 exec/total: 1993(us)/4181(us)             |                                 |
|    |              |              | "10.251.11.171":9779 exec/total: 1093(us)/3570(us)             |                                 |
|    |              |              | "10.251.11.163":9779 exec/total: 458(us)/827(us)               |                                 |
|    |              |              | "10.251.11.110":9779 exec/total: 762(us)/1197(us)              |                                 |
|    |              |              | "10.251.11.135":9779 exec/total: 2125(us)/4163(us)             |                                 |
|    |              |              | "10.251.11.138":9779 exec/total: 1446(us)/4340(us)             |                                 |
|    |              |              | "10.251.11.112":9779 exec/total: 811(us)/3941(us)              |                                 |
|    |              |              | }                                                              |                                 |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  7 | Limit        | 8            | ver: 0, rows: 1000, execTime: 1us, totalTime: 2us              | outputVar: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "colNames": [               |
|    |              |              |                                                                |       "vid"                     |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "name": "__Limit_3",        |
|    |              |              |                                                                |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | inputVar: __Project_2           |
|    |              |              |                                                                | offset: 0                       |
|    |              |              |                                                                | count: 1000                     |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  8 | Project      | 9            | ver: 0, rows: 1000, execTime: 31396us, totalTime: 31401us      | outputVar: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "colNames": [               |
|    |              |              |                                                                |       "vid"                     |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "name": "__Project_2",      |
|    |              |              |                                                                |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | inputVar: __GetNeighbors_1      |
|    |              |              |                                                                | columns: [                      |
|    |              |              |                                                                |   "subdomain._dst AS vid"       |
|    |              |              |                                                                | ]                               |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  9 | GetNeighbors | 0            | {                                                              | outputVar: [                    |
|    |              |              | ver: 0, rows: 0, execTime: 46us, totalTime: 6958us             |   {                             |
|    |              |              | "10.251.11.109":9779 exec/total/vertices: 5880(us)/6815(us)/1, |     "colNames": [],             |
|    |              |              | total_rpc_time: 6888(us)                                       |     "name": "__GetNeighbors_1", |
|    |              |              | }                                                              |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | inputVar: __VAR_1               |
|    |              |              |                                                                | space: 1                        |
|    |              |              |                                                                | dedup: false                    |
|    |              |              |                                                                | limit: 1000                     |
|    |              |              |                                                                | filter:                         |
|    |              |              |                                                                | orderBy: []                     |
|    |              |              |                                                                | src: $__VAR_1._vid              |
|    |              |              |                                                                | edgeTypes: []                   |
|    |              |              |                                                                | edgeDirection: OUT_EDGE         |
|    |              |              |                                                                | vertexProps:                    |
|    |              |              |                                                                | edgeProps: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "props": [                  |
|    |              |              |                                                                |       "_dst"                    |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "type": "4"                 |
|    |              |              |                                                                |   },                            |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "props": [                  |
|    |              |              |                                                                |       "_dst"                    |
|    |              |              |                                                                |     ],                          |
|    |              |              |                                                                |     "type": "-4"                |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
|    |              |              |                                                                | statProps:                      |
|    |              |              |                                                                | exprs:                          |
|    |              |              |                                                                | random: false                   |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
|  0 | Start        |              | ver: 0, rows: 0, execTime: 1us, totalTime: 35us                | outputVar: [                    |
|    |              |              |                                                                |   {                             |
|    |              |              |                                                                |     "colNames": [],             |
|    |              |              |                                                                |     "name": "__Start_0",        |
|    |              |              |                                                                |     "type": "DATASET"           |
|    |              |              |                                                                |   }                             |
|    |              |              |                                                                | ]                               |
-----+--------------+--------------+----------------------------------------------------------------+----------------------------------
2 个赞

Match的优化是在今年规划内的

2 个赞

希望能早点实现,或者优先对一些简单场景做优化,简单语句使用频率更高

浙ICP备20010487号