TaskTracker Decommission that waits for all map(intermediate) outputs to be
pulled
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Key: MAPREDUCE-2291
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2291
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: jobtracker
Reporter: Koji Noguchi
On our clusters, users were getting affected when ops were decommissioning a
large number of TaskTracker nodes.
Correct me if I'm wrong, but current decommission of TaskTrackers only waits
for the running tasks to finish but not
the jobs where map outputs are kept on that decommissioning tasktrackers.
Any ways we can handle this better?
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