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Posted to issues@ozone.apache.org by "Wei-Chiu Chuang (Jira)" <ji...@apache.org> on 2020/11/10 01:55:00 UTC

[jira] [Commented] (HDDS-3918) ConcurrentModificationException in ContainerReportHandler.onMessage

    [ https://issues.apache.org/jira/browse/HDDS-3918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17228910#comment-17228910 ] 

Wei-Chiu Chuang commented on HDDS-3918:
---------------------------------------

Saw this again. I'll open another jira to track this bug.

> ConcurrentModificationException in ContainerReportHandler.onMessage
> -------------------------------------------------------------------
>
>                 Key: HDDS-3918
>                 URL: https://issues.apache.org/jira/browse/HDDS-3918
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>            Reporter: Sammi Chen
>            Assignee: Xiaoyu Yao
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.0.0
>
>         Attachments: TestCME.java
>
>
> 2020-07-03 14:51:45,489 [EventQueue-ContainerReportForContainerReportHandler] ERROR org.apache.hadoop.hdds.server.events.SingleThreadExecutor: Error on execution message org.apache.hadoop.hdds.scm.server.SCMDatanodeHeartbeatDispatcher$ContainerReportFromDatanode@8f6e7cb
> java.util.ConcurrentModificationException
>         at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
>         at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
>         at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1044)
>         at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
>         at java.util.HashSet.<init>(HashSet.java:120)
>         at org.apache.hadoop.hdds.scm.container.ContainerReportHandler.onMessage(ContainerReportHandler.java:127)
>         at org.apache.hadoop.hdds.scm.container.ContainerReportHandler.onMessage(ContainerReportHandler.java:50)
>         at org.apache.hadoop.hdds.server.events.SingleThreadExecutor.lambda$onMessage$1(SingleThreadExecutor.java:81)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> 2020-07-03 14:51:45,648 [EventQueue-ContainerReportForContainerReportHandler] ERROR org.apache.hadoop.hdds.server.events.SingleThreadExecutor: Error on execution message org.apache.hadoop.hdds.scm.server.SCMDatanodeHeartbeatDispatcher$ContainerReportFromDatanode@49d2b84b
> java.util.ConcurrentModificationException
>         at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
>         at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
>         at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1044)
>         at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
>         at java.util.HashSet.<init>(HashSet.java:120)
>         at org.apache.hadoop.hdds.scm.container.ContainerReportHandler.onMessage(ContainerReportHandler.java:127)
>         at org.apache.hadoop.hdds.scm.container.ContainerReportHandler.onMessage(ContainerReportHandler.java:50)
>         at org.apache.hadoop.hdds.server.events.SingleThreadExecutor.lambda$onMessage$1(SingleThreadExecutor.java:81)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)



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