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From "Mukul Kumar Singh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDDS-1752) ConcurrentModificationException while handling DeadNodeHandler event
Date Tue, 02 Jul 2019 14:23:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mukul Kumar Singh updated HDDS-1752:
------------------------------------
    Labels: MiniOzoneChaosCluster  (was: )

> ConcurrentModificationException while handling DeadNodeHandler event
> --------------------------------------------------------------------
>
>                 Key: HDDS-1752
>                 URL: https://issues.apache.org/jira/browse/HDDS-1752
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: SCM
>    Affects Versions: 0.4.0
>            Reporter: Mukul Kumar Singh
>            Priority: Major
>              Labels: MiniOzoneChaosCluster
>
> ConcurrentModificationException while handling DeadNodeHandler event
> {code}
> 2019-07-02 19:29:25,190 ERROR events.SingleThreadExecutor (SingleThreadExecutor.java:lambda$onMessage$1(88))
- Error on execution message 56591ec5-c9e4-416c-9a36-db0507739fe5{ip: 192.168.0.2, host: 192.16
> 8.0.2, networkLocation: /default-rack, certSerialId: null}
> java.util.ConcurrentModificationException
>         at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)
>         at java.util.HashMap$KeyIterator.next(HashMap.java:1466)
>         at java.lang.Iterable.forEach(Iterable.java:74)
>         at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080)
>         at org.apache.hadoop.hdds.scm.node.DeadNodeHandler.lambda$destroyPipelines$1(DeadNodeHandler.java:99)
>         at java.util.Optional.ifPresent(Optional.java:159)
>         at org.apache.hadoop.hdds.scm.node.DeadNodeHandler.destroyPipelines(DeadNodeHandler.java:98)
>         at org.apache.hadoop.hdds.scm.node.DeadNodeHandler.onMessage(DeadNodeHandler.java:78)
>         at org.apache.hadoop.hdds.scm.node.DeadNodeHandler.onMessage(DeadNodeHandler.java:44)
>         at org.apache.hadoop.hdds.server.events.SingleThreadExecutor.lambda$onMessage$1(SingleThreadExecutor.java:85)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> {code}



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