Wei-Chiu Chuang created HDDS-12204:
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Summary: Improve failover logging
Key: HDDS-12204
URL: https://issues.apache.org/jira/browse/HDDS-12204
Project: Apache Ozone
Issue Type: Improvement
Reporter: Wei-Chiu Chuang
When an OM is unable to find the leader SCM, the failover message is not easy
to understand.
{noformat}
2025-02-03 20:50:13,520 INFO [IPC Server handler 49 on
9862]-org.apache.hadoop.io.retry.RetryInvocationHandler:
com.google.protobuf.ServiceException:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdds.ratis.ServerNotLeaderException):
Server:1eba3c81-e2b5-4daa-9767-fd81754abcb6 is not the leader. Could not
determine the leader node.
at
org.apache.hadoop.hdds.ratis.ServerNotLeaderException.convertToNotLeaderException(ServerNotLeaderException.java:105)
at
org.apache.hadoop.hdds.scm.ha.RatisUtil.checkRatisException(RatisUtil.java:248)
at
org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocolServerSideTranslatorPB.send(ScmBlockLocationProtocolServerSideTranslatorPB.java:111)
at
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:15776)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:533)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1070)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:994)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:922)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1910)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2899)
, while invoking $Proxy33.send over
nodeId=node1,nodeAddress=ccycloud-3.weichiu-hbase.root.comops.site/10.140.95.198:9863
after 279 failover attempts. Trying to failover after sleeping for 2000ms.
{noformat}
It would be better if it can log the role type that can't be connected to (SCM
in this case) and host name, instead of the bizarre UUID.
Example: log instead "SCM Server:1eba3c81-e2b5-4daa-9767-fd81754abcb6
(192.168.0.1) is not the leader. Could not determine the leader node."
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