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https://issues.apache.org/jira/browse/HDFS-6207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13963550#comment-13963550
]
Arpit Gupta commented on HDFS-6207:
-----------------------------------
{code}
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:894)
at java.util.HashMap$ValueIterator.next(HashMap.java:922)
at
java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1067)
at
org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSelector.selectToken(AbstractDelegationTokenSelector.java:53)
at
org.apache.hadoop.hdfs.HAUtil.cloneDelegationTokenForLogicalUri(HAUtil.java:260)
at
org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider.<init>
{code}
> ConcurrentModificationException in
> AbstractDelegationTokenSelector.selectToken()
> --------------------------------------------------------------------------------
>
> Key: HDFS-6207
> URL: https://issues.apache.org/jira/browse/HDFS-6207
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.4.0
> Reporter: Arpit Gupta
>
> While running a hive job on a HA cluster saw ConcurrentModificationException
> in AbstractDelegationTokenSelector.selectToken()
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