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HADOOP - What is a Task instance in Hadoop? Where does it run?




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asked SRVMTrainings August 9, 2013 08:25 AM  

What is a Task instance in Hadoop? Where does it run?


           

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Task Instance:
These are the actual MapReduce jobs which runs on each slave node.

Task instance starts a separate JVM process to do the actual work. This is to ensure that the process failure does not take down task tracker.
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