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https://issues.apache.org/jira/browse/HBASE-22935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16917303#comment-16917303
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Andrew Purtell commented on HBASE-22935:
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+1
> TaskMonitor warns MonitoredRPCHandler task may be stuck when it recently
> started
> --------------------------------------------------------------------------------
>
> Key: HBASE-22935
> URL: https://issues.apache.org/jira/browse/HBASE-22935
> Project: HBase
> Issue Type: Bug
> Components: logging
> Affects Versions: 3.0.0, 1.4.0, 1.5.0, 1.3.3, 2.0.0
> Reporter: David Manning
> Assignee: David Manning
> Priority: Minor
> Attachments: HBASE-22935.master.001.patch
>
>
> After setting {{hbase.taskmonitor.rpc.warn.time}} to 180000, the logs show
> WARN messages such as these
> {noformat}
> 2019-08-08 21:50:02,601 WARN [read for TaskMonitor] monitoring.TaskMonitor -
> Task may be stuck: RpcServer.FifoWFPBQ.default.handler=4,queue=4,port=60020:
> status=Servicing call from <ip>:55164: Scan, state=RUNNING,
> startTime=1563305858103, completionTime=-1, queuetimems=1565301002599,
> starttimems=1565301002599, clientaddress=<ip>, remoteport=55164,
> packetlength=370, rpcMethod=Scan
> {noformat}
> Notice that the first {{starttimems}} is far in the past. The second
> {{starttimems}} and the {{queuetimems}} are much closer to the log timestamp
> than 180 seconds. I think this is because the warnTime is initialized to the
> time that MonitoredTaskImpl is created, but never updated until we write a
> warn message to the log.
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