Ability to pause/resume tasks
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Key: HADOOP-3687
URL: https://issues.apache.org/jira/browse/HADOOP-3687
Project: Hadoop Core
Issue Type: New Feature
Components: mapred
Reporter: Chris Smith
Priority: Minor
It would be nice to be able to pause (and subsequently resume) tasks that are
currently running, in order to allow tasks from higher priority jobs to
execute. At present it is quite easy for long-running tasks from low priority
jobs to block a task from a newer high priority job, and there is no way to
force the execution of the high priority task without killing the low priority
jobs.
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