Java SDK 3.8.0 出现异常：create session failed.并且导致graph服务下线

问答 问题
,
1

  • nebula 版本：3.8.0

  • 部署方式：分布式

  • 安装方式：TAR包安装

  • 是否上生产环境：Y

  • 硬件信息

    • 存储：1T（非SSD）
    • CPU：32C
    • 内存：256G

  • 部署方案：
    参考官方部署方案

    image
    image793×438 10.7 KB

  • 问题的具体描述
    程序执行一段时间后出现异常：
    Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.vesoft.nebula.client.graph.SessionPool]: Factory method sessionPool’ threw exception; nested exception is java.lang RuntimeException: create session failed.
    Caused by: java.lang.RuntimeException: create session failed.
    at com.vesoft.nebula.client.graph.SessionPool.init (SessionPool.java:127)
    at com.vesoft.nebula.client.graph.SessionPool.(SessionPool.java: 73)
    Caused by: com.vesoft.nebula.client.graph.exception.IOErrorException: java.net.ConnectException: Connection refused (Connection refused)
    at com.vesoft.nebula.client.graph.net.SyncConnection.open (SyncConnection.java:137)
    at com.vesoft.nebula.client.graph.SessionPool.createSessionObject (SessionPool.java: 395)
    at com.vesoft.nebula.client-graph.SessionPool.init (SessionPool.java:(SessionPool.java: 123)

查看图数据库状态时
[INFO] nebula-metad(7458486): Running as 1460855, Listening on 9559
[INFO] nebula-graphd(7458486): Exited
[INFO] nebula-storaged(7458486): Running as 1460989, Listening on 9779

启动graphd后程序恢复正常，但是一段时间（一天或几天）后问题又出现了

  • 相关的 meta / storage / graph info 日志信息
    metad日志：
    E20241029 16:50:36.354398 1461238 SessionManagerProcessor.cpp:215] Remove session key failed, error code: -17

graph日志：
Create session for userName: cattsoft, ip: xx.xx.xx.xx failed: Insert session to local cache failed.
E20241029 16:48:46.746682 1461032 GraphService.cpp:113] Create session for userName: cattsoft, ip: xx.xx.xx.xx failed: Insert session to local cache failed.

storaged日志：
Log file created at: 2024/10/28 18:20:08
Running on machine: c-02
Running duration (h:mm:ss): 0:00:00
Log line format: [IWEF]yyyymmdd hh:mm:ss.uuuuuu threadid file:line] msg
E20241028 18:20:08.033663 1461113 AddEdgesProcessor.cpp:359] Error! ret = E_LEADER_CHANGED, spaceId 2
E20241028 18:20:17.776060 1461113 AddEdgesProcessor.cpp:359] Error! ret = E_LEADER_CHANGED, spaceId 2
E20241028 18:21:11.758066 1461115 Serializer.h:43] Thrift serialization is only defined for structs and unions, not containers thereof. Attemping to deserialize a value of type nebula::HostAddr.
E20241028 18:23:13.663666 1461590 Serializer.h:43] Thrift serialization is only defined for structs and unions, not containers thereof. Attemping to deserialize a value of type nebula::Value.

  • 配置相关说明
    1、graph配置使用的默认值
    session_idle_timeout_secs=28800
    client_idle_timeout_secs=28800
    2、程序配置使用的默认值
    timeout = 0
    cleanTime = 3600;