rongli created IOTDB-5794:
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Summary: [thrift] when use sessionPool.fetchAllConnections(),the
datanode print TProtocolException
Key: IOTDB-5794
URL: https://issues.apache.org/jira/browse/IOTDB-5794
Project: Apache IoTDB
Issue Type: Bug
Components: Core/Server
Affects Versions: master branch, 1.0, 1.1.0, 1.2
Reporter: rongli
Attachments: image-2023-04-19-11-30-30-250.png,
image-2023-04-19-11-30-42-929.png
when use fetchAllConnections(), Sometimes it doesn't work。
datanode throws TProtocolException: Required field 'userName' was not present!
Struct: TSConnectionInfo(userName:null, logInTime:0,
connectionId:172.20.31.19:57584, type:THRIFT_BASED).
Under what circumstances does this problem occur。
Sometimes the field 'userName' maybe empty
branch：rel/1.0、rel/1.1、master
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fetchAllConnections方法有时候无法正常返回连接信息。
查看服务器出现如下日志。不确定什么情况下会出现该问题，但是经常会出现。
看日志是某些连接 'userName' 为空导致的，可能是建立了thrift连接但没有正常使用？
影响分支：rel/1.0、rel/1.1、master
!image-2023-04-19-11-30-42-929.png!
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