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https://issues.apache.org/jira/browse/RATIS-648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16955104#comment-16955104
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Tsz-wo Sze commented on RATIS-648:
----------------------------------
TestMetaServer.testDeleteLog() is failing with NullPointerException. It seems
related to this.
{code}
2019-10-19 15:59:17,894 INFO segmented.SegmentedRaftLogWorker
(SegmentedRaftLogWorker.java:execute(576)) -
localhost_10000@group-000000000002-SegmentedRaftLogWorker: created new log
segment
/Users/szetswo/ratis/incubator-ratis/ratis-logservice/target/test/data/dbb029a4/workers/0/00000000-0000-0000-0000-000000000002/current/log_inprogress_0
SEVERE: Exception while executing runnable
org.apache.ratis.thirdparty.io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1MessagesAvailable@494b5f3e
java.lang.NullPointerException
at
org.apache.ratis.grpc.server.GrpcLogAppender$AppendLogResponseHandler.onError(GrpcLogAppender.java:303)
at
org.apache.ratis.thirdparty.io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose(ClientCalls.java:434)
...
{code}
I did a bad job of committing RATIS-702 without first making sure that all
tests passed so that I am checking the test failures.
We need to do better. 💪
> Add metrics related to GrpcLogAppendRequests
> ---------------------------------------------
>
> Key: RATIS-648
> URL: https://issues.apache.org/jira/browse/RATIS-648
> Project: Ratis
> Issue Type: Sub-task
> Components: server
> Affects Versions: 0.4.0
> Reporter: Shashikant Banerjee
> Assignee: Siddharth Wagle
> Priority: Major
> Fix For: 0.5.0
>
> Attachments: RATIS-648.00.patch, RATIS-648.01.patch,
> RATIS-648.02.patch, RATIS-648.03.patch, RATIS-648.04.patch, RATIS-648.05.patch
>
>
> Following metrics would be useful related to GrpcLogAppends for performance
> and health monitoring and tuning:
> |GrpcLogAppenderLatency|Time taken to append a log entry to each follower and
> get acknowledgement|
> |logAppendRetryCount|Total no of retried logAppends requests|
> |logAppendRequestCount|Total no of logAppendRequest|
> |appendEntryProcessingLatency|Time required to process an append entry
> request on each follower|
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