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  1. Hadoop Common
  2. HADOOP-2639

Reducers stuck in shuffle

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.16.0
    • Component/s: None
    • Labels:
      None

      Description

      I started sort benchmark on 500 nodes. It has 40000 maps and 900 reducers.
      There are 11 reducers stuck in shuffle with 33% progress. I could see a node down which ran 80 maps on it. And all these reducers are trying to fetch map output from that node.

        Attachments

        1. HADOOP-2639_1_20080128.patch
          3 kB
          Arun Murthy
        2. HADOOP-2639.patch
          1 kB
          Amar Kamat

          Activity

            People

            • Assignee:
              acmurthy Arun Murthy
              Reporter:
              amareshwari Amareshwari Sriramadasu
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              Dates

              • Created:
                Updated:
                Resolved: