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I'm using hadoop-0.20.2.

Looking at hadoop fs. I am able to kill or fail an individual task. Is there anyway to pause it so that the map slots are freed up for another task?

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up vote 6 down vote accepted

No. You can't suspend a job.

There isn't. Slots are assigned for the duration of the tasks.

You can decrease the priority in the scheduler which will allow some slots to be reclaimed as tasks complete.

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This is good, if sad answer :( – Eric Bloch Jan 9 '13 at 1:29

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