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Posted to dev@nutch.apache.org by "Paul Baclace (JIRA)" <ji...@apache.org> on 2005/12/28 22:47:04 UTC
[jira] Commented: (NUTCH-108) tasktracker crashs when reconnecting to a new jobtracker.
[ http://issues.apache.org/jira/browse/NUTCH-108?page=comments#action_12361339 ]
Paul Baclace commented on NUTCH-108:
------------------------------------
I just had the opportunity to test this with 33 tasktrackers.
One thing I noticed: TaskTracker.java should be patched to reduce the redundant, voluminous output (unnecessary stack trace every 5 sec.) from the retry loop.
All of the tasktrackers are now able to successfully reconnect.
> tasktracker crashs when reconnecting to a new jobtracker.
> ---------------------------------------------------------
>
> Key: NUTCH-108
> URL: http://issues.apache.org/jira/browse/NUTCH-108
> Project: Nutch
> Type: Bug
> Versions: 0.8-dev
> Reporter: Stefan Groschupf
> Priority: Critical
>
> 051008 213532 Lost connection to JobTracker [/192.168.200.100:7020]. Retrying...
> 051008 213537 Client connection to 192.168.200.100:7020: starting
> 051008 213537 Client connection to 192.168.200.105:7030: closing
> 051008 213537 Server connection on port 7030 from 192.168.200.105: exiting
> 051008 213537 Server connection on port 7030 from 192.168.200.102: exiting
> 051008 213537 Client connection to 192.168.200.102:7030: closing
> 051008 213537 task_m_1iswra done; removing files.
> 051008 213537 Server connection on port 7030 from 192.168.200.101: exiting
> 051008 213537 Client connection to 192.168.200.101:7030: closing
> Exception in thread "main" java.util.ConcurrentModificationException
> at java.util.TreeMap$EntryIterator.nextEntry(TreeMap.java:1026)
> at java.util.TreeMap$ValueIterator.next(TreeMap.java:1057)
> at org.apache.nutch.mapred.TaskTracker.close(TaskTracker.java:134)
> at org.apache.nutch.mapred.TaskTracker.run(TaskTracker.java:285)
> at org.apache.nutch.mapred.TaskTracker.main(TaskTracker.java:629)
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