Mark Gui created HDDS-5725:
------------------------------
Summary: Catch possible AlreadyExistsException for create pipeline
command.
Key: HDDS-5725
URL: https://issues.apache.org/jira/browse/HDDS-5725
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Datanode
Reporter: Mark Gui
Assignee: Mark Gui
Suspicious error logs seen upon pipeline creation on datanode side:
{code:java}
2021-09-07 06:50:31,920 [Command processor thread] ERROR
org.apache.hadoop.ozone.container.common.statemachine.commandhandler.CreatePipelineCommandHandler:
Can't create pipeline RATIS THREE
PipelineID=6c7e4b36-1f8d-41c1-b304-e8629e383fb3
java.io.IOException: 686266d4-d95c-46a5-acb0-cf3b8569e527: Failed to add
group-E8629E383FB3:[b5f6ebd0-b0dd-4dd2-b320-b8ac57fad57f|rpc:17.16.10.60:9856|admin:17.16.10.60:9857|client:17.16.10.60:19858|priority:1,
686266d4-d95c-46a5-acb0-cf3b8569e527|rpc:17.16.10.66:9856|admin:17.16.10.66:9857|client:17.16.10.66:19858|priority:0,
8b819046-c478-47ec-a37a-ea7053e9a5f8|rpc:17.16.10.57:9856|admin:17.16.10.57:9857|client:17.16.10.57:19858|priority:0]
since the group already exists in the map.
at
org.apache.hadoop.ozone.container.common.transport.server.ratis.XceiverServerRatis.addGroup(XceiverServerRatis.java:756)
at
org.apache.hadoop.ozone.container.common.statemachine.commandhandler.CreatePipelineCommandHandler.handle(CreatePipelineCommandHandler.java:92)
at
org.apache.hadoop.ozone.container.common.statemachine.commandhandler.CommandDispatcher.handle(CommandDispatcher.java:99)
at
org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.lambda$initCommandHandlerThread$2(DatanodeStateMachine.java:555)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.ratis.protocol.exceptions.AlreadyExistsException:
686266d4-d95c-46a5-acb0-cf3b8569e527: Failed to add
group-E8629E383FB3:[b5f6ebd0-b0dd-4dd2-b320-b8ac57fad57f|rpc:17.16.10.60:9856|admin:17.16.10.60:9857|client:17.16.10.60:19858|priority:1,
686266d4-d95c-46a5-acb0-cf3b8569e527|rpc:17.16.10.66:9856|admin:17.16.10.66:9857|client:17.16.10.66:19858|priority:0,
8b819046-c478-47ec-a37a-ea7053e9a5f8|rpc:17.16.10.57:9856|admin:17.16.10.57:9857|client:17.16.10.57:19858|priority:0]
since the group already exists in the map.
at
org.apache.ratis.server.impl.RaftServerProxy$ImplMap.addNew(RaftServerProxy.java:89)
at
org.apache.ratis.server.impl.RaftServerProxy.groupAddAsync(RaftServerProxy.java:472)
at
org.apache.ratis.server.impl.RaftServerProxy.groupManagementAsync(RaftServerProxy.java:456)
at
org.apache.ratis.server.impl.RaftServerProxy.groupManagement(RaftServerProxy.java:440)
at
org.apache.hadoop.ozone.container.common.transport.server.ratis.XceiverServerRatis.addGroup(XceiverServerRatis.java:754)
... 4 more
{code}
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