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https://issues.apache.org/jira/browse/CASSANDRA-757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12889313#action_12889313
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Jonathan Ellis commented on CASSANDRA-757:
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backporting this to 0.6 doesn't work for me, but a hack to log exceptions would
be ok.
> FatClient removal causes ConcurrentModificationException
> --------------------------------------------------------
>
> Key: CASSANDRA-757
> URL: https://issues.apache.org/jira/browse/CASSANDRA-757
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.5
> Environment: debian lenny amd64 OpenJDK 64-Bit Server VM (build
> 1.6.0_0-b11, mixed mode)
> Reporter: Brandon Williams
> Assignee: Brandon Williams
> Priority: Minor
> Fix For: 0.7
>
> Attachments: 0001_use_concurrent_structures.txt
>
>
> After using a fatclient and killing it, I later receive this ST on all nodes:
> INFO 16:04:58,999 FatClient /10.242.4.13 has been silent for 3600000ms,
> removing from gossip
> ERROR 16:04:58,999 Fatal exception in thread Thread[Timer-1,5,main]
> java.lang.RuntimeException: java.util.ConcurrentModificationException
> at
> org.apache.cassandra.gms.Gossiper$GossipTimerTask.run(Gossiper.java:96)
> at java.util.TimerThread.mainLoop(Timer.java:534)
> at java.util.TimerThread.run(Timer.java:484)
> Caused by: java.util.ConcurrentModificationException
> at java.util.Hashtable$Enumerator.next(Hashtable.java:1048)
> at org.apache.cassandra.gms.Gossiper.doStatusCheck(Gossiper.java:382)
> at
> org.apache.cassandra.gms.Gossiper$GossipTimerTask.run(Gossiper.java:90)
> ... 2 more
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