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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "LimitingTaskSlotUsage" by SomeOtherAccount
Date Wed, 08 Dec 2010 22:34:01 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "LimitingTaskSlotUsage" page has been changed by SomeOtherAccount.


  If a task absolutely must break the rules, there are a few things one can do:
+  * Disable SpeculativeExecution .
   * Deploy ZooKeeper and use it as a persistent lock to keep track of how many tasks are
running concurrently
   * Use a scheduler with a maximum task-per-queue feature and submit the job to that queue,
such as FairShareScheduler or CapacityScheduler

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