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Posted to mapreduce-issues@hadoop.apache.org by "Bhallamudi Venkata Siva Kamesh (JIRA)" <ji...@apache.org> on 2011/02/21 10:37:42 UTC
[jira] Updated: (MAPREDUCE-2341) Map and Reduce task JVMs are
hanging infinitely
[ https://issues.apache.org/jira/browse/MAPREDUCE-2341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bhallamudi Venkata Siva Kamesh updated MAPREDUCE-2341:
------------------------------------------------------
Priority: Major (was: Critical)
> Map and Reduce task JVMs are hanging infinitely
> ------------------------------------------------
>
> Key: MAPREDUCE-2341
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2341
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Environment: Linux
> Reporter: Bhallamudi Venkata Siva Kamesh
>
> Description:
> When launching Mapreduce application, the property *mapred.job.reuse.jvm.num.tasks* has been set to *0*, as a result the task JVM(MAP or Reduce JVM) is hanging indefinitely and finally being killed by Tasktracker.
> Steps to Reproduce
> ------------------
> 1) Set the *mapred.job.reuse.jvm.num.tasks* property in mapred-site.xml to 0
> 2) Execute the wordcount example, child JVM is hanging indefinitely and finally killed by Tasktracker
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