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Posted to issues@ozone.apache.org by "Nanda kumar (Jira)" <ji...@apache.org> on 2020/12/01 06:09:00 UTC

[jira] [Created] (HDDS-4534) ConcurrentModificationException in ContainerReportHandler

Nanda kumar created HDDS-4534:
---------------------------------

             Summary: ConcurrentModificationException in ContainerReportHandler
                 Key: HDDS-4534
                 URL: https://issues.apache.org/jira/browse/HDDS-4534
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
          Components: SCM
            Reporter: Nanda kumar
            Assignee: Nanda kumar


{{ConcurrentModificationException}} in SCM while processing container report.
{code:java}
2020-11-23 05:36:53,097 ERROR org.apache.hadoop.hdds.server.events.SingleThreadExecutor: Error on execution message org.apache.hadoop.hdds.scm.server.SCMDatanodeHeartbeatDispatcher$ContainerReportFromDatanode@146b6117
java.util.ConcurrentModificationException
        at java.util.HashMap$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) {code}



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