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https://issues.apache.org/jira/browse/RATIS-1942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17796420#comment-17796420
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Attila Doroszlai commented on RATIS-1942:
-----------------------------------------
Events starting around {{2023-12-10 01:18:29,816}} in
[log|https://github.com/adoroszlai/ratis-build-results/blob/master/2023/12/10/2833/unit-grpc/ratis-test/org.apache.ratis.grpc.TestRetryCacheWithGrpc-output.txt]:
* s4 requests vote for PRE_VOTE at term 0
* finds new term=1 from s2, gets NPE from s3 (problem described in previous
comment)
* s4->s3 changes to EXCEPTION state (since NPE is not an IOException)
* s4 requests vote for PRE_VOTE at term 1
* gets OK from s2, NPE from s3
* s4->s3 illegal transition EXCEPTION -> STARTING
* vote PASSED due to response from s2
* s4 requests vote for ELECTION
* gets OK from s2, NPE from s3
* s4->s3 illegal transition STARTING -> STARTING
> GrpcLogAppender has ILLEGAL TRANSITION: STARTING -> STARTING
> ------------------------------------------------------------
>
> Key: RATIS-1942
> URL: https://issues.apache.org/jira/browse/RATIS-1942
> Project: Ratis
> Issue Type: Bug
> Components: gRPC
> Reporter: Tsz-wo Sze
> Assignee: Tsz-wo Sze
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> TestRetryCacheWithGrpc has the following exception (although the test may
> pass):
> {code}
> 2023-11-27 11:19:57,509
> [s3@group-F810F08D0B98->s4-GrpcLogAppender-LogAppenderDaemon] WARN
> leader.LogAppenderDaemon (LogAppenderDaemon.java:run(89)) -
> s3@group-F810F08D0B98->s4-GrpcLogAppender-LogAppenderDaemon failed
> java.lang.IllegalStateException: ILLEGAL TRANSITION: In s4, STARTING ->
> STARTING
> at org.apache.ratis.util.Preconditions.assertTrue(Preconditions.java:61)
> at org.apache.ratis.util.LifeCycle$State.validate(LifeCycle.java:121)
> at org.apache.ratis.util.LifeCycle.transition(LifeCycle.java:164)
> at
> org.apache.ratis.util.LifeCycle.startAndTransition(LifeCycle.java:268)
> at
> org.apache.ratis.util.PeerProxyMap$PeerAndProxy.getProxy(PeerProxyMap.java:63)
> at org.apache.ratis.util.PeerProxyMap.getProxy(PeerProxyMap.java:110)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender.getClient(GrpcLogAppender.java:121)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender.appendLog(GrpcLogAppender.java:313)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender.run(GrpcLogAppender.java:181)
> at
> org.apache.ratis.server.leader.LogAppenderDaemon.run(LogAppenderDaemon.java:80)
> at java.lang.Thread.run(Thread.java:750)
> {code}
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