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From "Brahma Reddy Battula (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-3574) RM hangs on stopping MetricsSinkAdapter when transitioning to standby
Date Tue, 05 May 2015 00:19:06 GMT

     [ https://issues.apache.org/jira/browse/YARN-3574?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brahma Reddy Battula reassigned YARN-3574:
------------------------------------------

    Assignee: Brahma Reddy Battula

> RM hangs on stopping MetricsSinkAdapter when transitioning to standby
> ---------------------------------------------------------------------
>
>                 Key: YARN-3574
>                 URL: https://issues.apache.org/jira/browse/YARN-3574
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Brahma Reddy Battula
>
> We've seen a situation that one RM hangs on stopping the MetricsSinkAdapter
> {code}
> "main-EventThread" daemon prio=10 tid=0x00007f9b24031000 nid=0x2d18 in Object.wait()
[0x00007f9afe7eb000]
>    java.lang.Thread.State: WAITING (on object monitor)
>         at java.lang.Object.wait(Native Method)
>         - waiting on <0x00000000c058dcf8> (a org.apache.hadoop.metrics2.impl.MetricsSinkAdapter$1)
>         at java.lang.Thread.join(Thread.java:1281)
>         - locked <0x00000000c058dcf8> (a org.apache.hadoop.metrics2.impl.MetricsSinkAdapter$1)
>         at java.lang.Thread.join(Thread.java:1355)
>         at org.apache.hadoop.metrics2.impl.MetricsSinkAdapter.stop(MetricsSinkAdapter.java:202)
>         at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.stopSinks(MetricsSystemImpl.java:472)
>         - locked <0x00000000c04cc1a0> (a org.apache.hadoop.metrics2.impl.MetricsSystemImpl)
>         at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.stop(MetricsSystemImpl.java:213)
>         - locked <0x00000000c04cc1a0> (a org.apache.hadoop.metrics2.impl.MetricsSystemImpl)
>         at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.shutdown(MetricsSystemImpl.java:592)
>         - locked <0x00000000c04cc1a0> (a org.apache.hadoop.metrics2.impl.MetricsSystemImpl)
>         at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.shutdownInstance(DefaultMetricsSystem.java:72)
>         at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.shutdown(DefaultMetricsSystem.java:68)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStop(ResourceManager.java:605)
>         at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
>         - locked <0x00000000c0503568> (a java.lang.Object)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.stopActiveServices(ResourceManager.java:1024)
>         at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToStandby(ResourceManager.java:1076)
>         - locked <0x00000000c03fe3b8> (a org.apache.hadoop.yarn.server.resourcemanager.ResourceManager)
>         at org.apache.hadoop.yarn.server.resourcemanager.AdminService.transitionToStandby(AdminService.java:322)
>         - locked <0x00000000c0502b10> (a org.apache.hadoop.yarn.server.resourcemanager.AdminService)
>         at org.apache.hadoop.yarn.server.resourcemanager.EmbeddedElectorService.becomeStandby(EmbeddedElectorService.java:135)
>         at org.apache.hadoop.ha.ActiveStandbyElector.becomeStandby(ActiveStandbyElector.java:911)
>         at org.apache.hadoop.ha.ActiveStandbyElector.processResult(ActiveStandbyElector.java:428)
>         - locked <0x00000000c0718940> (a org.apache.hadoop.ha.ActiveStandbyElector)
>         at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:605)
>         at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> {code}
>  looks like the {{sinkThread.interrupt();}} in MetricsSinkAdapter#stop doesn't really
interrupt the thread, which cause it to hang at join.
> This appears only once.



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