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https://issues.apache.org/jira/browse/RATIS-530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai resolved RATIS-530.
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Resolution: Done
> Avoid using common fork join pool
> ---------------------------------
>
> Key: RATIS-530
> URL: https://issues.apache.org/jira/browse/RATIS-530
> Project: Ratis
> Issue Type: Improvement
> Reporter: Arpit Agarwal
> Priority: Major
>
> After enabling thread context in Ozone log messages, we see some Ratis
> operations being executed in common fork join pool. E.g.
> {code}
> 2019-04-11 14:25:54,583 ForkJoinPool.commonPool-worker-3 INFO
> storage.RaftLogWorker (RaftLogWorker.java:rollLogSegment(303)) -
> 3e59bcbc-e6f0-4681-b8a6-76e163e9ff19-RaftLogWorker: Rolling segment log-0_70
> to index:70
> {code}
> and
> {code}
> 2019-04-11 14:25:56,715 ForkJoinPool.commonPool-worker-1 INFO
> client.GrpcClientProtocolService
> (GrpcClientProtocolService.java:lambda$processClientRequest$0(264)) - Failed
> RaftClientRequest:client-B5832CAE4B89->8a182bb4-96a8-42e8-a7da-549c9663fc30@group-7136CD304607,
> cid=333, seq=0, Watch-ALL_COMMITTED(79), Message:<EMPTY>,
> reply=RaftClientReply:client-B5832CAE4B89->8a182bb4-96a8-42e8-a7da-549c9663fc30@group-7136CD304607,
> cid=333, FAILED org.apache.ratis.protocol.NotLeaderException: Server
> 8a182bb4-96a8-42e8-a7da-549c9663fc30 is not the leader
> (beff1b4d-05f9-4f7d-a6f2-1405b0950e8c:10.22.8.149:57253). Request must be
> sent to leader., logIndex=0,
> commits[8a182bb4-96a8-42e8-a7da-549c9663fc30:c129,
> 48a1cbdc-86a2-40d3-9831-13e044923ee4:c72,
> beff1b4d-05f9-4f7d-a6f2-1405b0950e8c:c129]
> {code}
> It's better to use a dedicated ExecutorService or ForkJoinPool instead.
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