Map and Reduce task JVMs are hanging infinitely
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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
Priority: Critical
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
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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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