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  1. Hadoop Map/Reduce
  2. MAPREDUCE-2266

JvmManager sleeps between SIGTERM and SIGKILL while holding many TT locks

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Won't Fix
    • 0.22.0
    • None
    • task-controller, tasktracker
    • None

    Description

      Between sending a task SIGTERM and SIGKILL, the JvmManager will sleep for sleepTimeBeforeSigKill millis. But in many call heirarchies this is done while holding important locks like the TT lock and the JvmManagerForType lock. With the default 5 second sleep, this prevents other tasks from getting scheduled and reduces scheduling throughput.

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          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. MAPREDUCE-2178 Race condition in LinuxTaskController permissions handling

          • Major - Major loss of function.
          • Resolved

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              Unassigned Unassigned
              tlipcon Todd Lipcon
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              Dates

                Created:
                Updated:
                Resolved: