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https://issues.apache.org/jira/browse/RATIS-515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16834565#comment-16834565
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Mukul Kumar Singh commented on RATIS-515:
-----------------------------------------
Thanks for working on this [~szetszwo]. The test failures seems related to the
patch. There are some NPE while handling AppendEntryReplyProto response.
> IllegalStateException while updating matchIndex
> -----------------------------------------------
>
> Key: RATIS-515
> URL: https://issues.apache.org/jira/browse/RATIS-515
> Project: Ratis
> Issue Type: Bug
> Components: server
> Affects Versions: 0.4.0
> Reporter: Mukul Kumar Singh
> Assignee: Tsz Wo Nicholas Sze
> Priority: Critical
> Labels: MiniOzoneChaosCluster
> Attachments: miniozonelog.txt, r515_20190506.patch
>
>
> Match index is not updated increasingly as noted in the following stack trace.
> {code}
> java.lang.IllegalStateException: Failed to updateIncreasingly for matchIndex:
> 393 -> 0
> at
> org.apache.ratis.util.Preconditions.assertTrue(Preconditions.java:72)
> at
> org.apache.ratis.server.storage.RaftLogIndex.updateIncreasingly(RaftLogIndex.java:60)
> at
> org.apache.ratis.server.impl.FollowerInfo.updateMatchIndex(FollowerInfo.java:66)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender.onSuccess(GrpcLogAppender.java:309)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender$AppendLogResponseHandler.onNextImpl(GrpcLogAppender.java:239)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender$AppendLogResponseHandler.onNext(GrpcLogAppender.java:224)
> at
> org.apache.ratis.grpc.server.GrpcLogAppender$AppendLogResponseHandler.onNext(GrpcLogAppender.java:206)
> at
> org.apache.ratis.thirdparty.io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onMessage(ClientCalls.java:421)
> at
> org.apache.ratis.thirdparty.io.grpc.ForwardingClientCallListener.onMessage(ForwardingClientCallListener.java:33)
> at
> org.apache.ratis.thirdparty.io.grpc.ForwardingClientCallListener.onMessage(ForwardingClientCallListener.java:33)
> at
> org.apache.ratis.thirdparty.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable.runInContext(ClientCallImpl.java:519)
> at
> org.apache.ratis.thirdparty.io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
> at
> org.apache.ratis.thirdparty.io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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