Hadoop Common
  1. Hadoop Common
  2. HADOOP-5130

TaskTracker seems to hold onto the assigned task for a long while before launching it

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Won't Fix
    • Affects Version/s: 0.20.0
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None

      Description

      I saw atleast a couple of instances where the task assigned to the TaskTracker is launched several minutes after the receipt of the LaunchTaskAction:

      2009-01-27 13:55:53,402 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask): attempt_200901270818_0006_m_000602_0
      2009-01-27 13:55:55,129 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch : attempt_200901270818_0006_m_000602_0
      2009-01-27 13:55:55,129 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher, current free slots : 2 and trying to launch attempt_200901270818_0006_m_000602_0
      2009-01-27 14:04:17,744 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_200901270818_0006_m_176495965 given task: attempt_200901270818_0006_m_000602_0
      2009-01-27 14:04:24,020 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0 1.0% 
      2009-01-27 14:04:27,023 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0 1.0% 
      2009-01-27 14:04:30,026 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0 1.0% 
      2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0 1.0% 
      2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: Task attempt_200901270818_0006_m_000602_0 is done.
      2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: reported output size for attempt_200901270818_0006_m_000602_0  was 0
      

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            • Assignee:
              Unassigned
              Reporter:
              Arun C Murthy
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              Dates

              • Created:
                Updated:
                Resolved:

                Development