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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12399) Master startup race between metrics and RpcServer
Date Sat, 01 Nov 2014 00:21:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192809#comment-14192809
] 

Devaraj Das commented on HBASE-12399:
-------------------------------------

+1

> Master startup race between metrics and RpcServer
> -------------------------------------------------
>
>                 Key: HBASE-12399
>                 URL: https://issues.apache.org/jira/browse/HBASE-12399
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Nick Dimiduk
>            Priority: Minor
>             Fix For: 2.0.0, 0.98.8, 0.99.2
>
>         Attachments: 12399.patch
>
>
> Seeing this on CM tests with frequent master thrashing
> {noformat}
> 2014-10-31 12:01:59,196 ERROR [Timer for 'HBase' metrics system] impl.MetricsSourceAdapter:
Error getting metrics from source IPC,sub=IPC
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.ipc.FifoRpcScheduler.getGeneralQueueLength(FifoRpcScheduler.java:81)
> 	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerWrapperImpl.getGeneralQueueLength(MetricsHBaseServerWrapperImpl.java:43)
> 	at org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl.getMetrics(MetricsHBaseServerSourceImpl.java:117)
> 	at org.apache.hadoop.metrics2.impl.MetricsSourceAdapter.getMetrics(MetricsSourceAdapter.java:195)
> 	at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.snapshotMetrics(MetricsSystemImpl.java:419)
> 	at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.sampleMetrics(MetricsSystemImpl.java:406)
> 	at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.onTimerEvent(MetricsSystemImpl.java:382)
> 	at org.apache.hadoop.metrics2.impl.MetricsSystemImpl$4.run(MetricsSystemImpl.java:369)
> 	at java.util.TimerThread.mainLoop(Timer.java:555)
> 	at java.util.TimerThread.run(Timer.java:505)
> {noformat}



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