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Posted to common-dev@hadoop.apache.org by "Raghu Angadi (JIRA)" <ji...@apache.org> on 2008/04/01 00:26:30 UTC
[jira] Commented: (HADOOP-3141) periodic
ConcurrentModificationException in IPC Server
[ https://issues.apache.org/jira/browse/HADOOP-3141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12583909#action_12583909 ]
Raghu Angadi commented on HADOOP-3141:
--------------------------------------
I think this should be fixed in 0.16.3. It does look scary to the user though for now it does not do any harm.
> periodic ConcurrentModificationException in IPC Server
> ------------------------------------------------------
>
> Key: HADOOP-3141
> URL: https://issues.apache.org/jira/browse/HADOOP-3141
> Project: Hadoop Core
> Issue Type: Bug
> Components: ipc
> Affects Versions: 0.16.1
> Reporter: Nigel Daley
>
> Seeing this exception in the Namenode log (429 of them yesterday alone)
> 2008-03-30 00:00:32,332 WARN org.apache.hadoop.ipc.Server: Exception in Responder java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
> at java.util.HashMap$KeyIterator.next(HashMap.java:827)
> at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1010)
> at org.apache.hadoop.ipc.Server$Responder.run(Server.java:475)
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