Mukul Kumar Singh created HDDS-1752:
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Summary: 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
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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