Affects Version/s: None
Fix Version/s: None
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