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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6334

Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.7.0
    • Fix Version/s: 2.8.0, 2.7.1, 2.6.2, 3.0.0-alpha1
    • Component/s: None
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      We are seeing this happen when

      • an NM's disk goes bad during the creation of map output(s)
      • the reducer's fetcher can read the shuffle header and reserve the memory
      • but gets an IOException when trying to shuffle for InMemoryMapOutput
      • shuffle fetch retry is enabled

        Attachments

        1. MAPREDUCE-6334.001.patch
          4 kB
          Eric Payne
        2. MAPREDUCE-6334.002.patch
          4 kB
          Eric Payne

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              • Assignee:
                eepayne Eric Payne
                Reporter:
                eepayne Eric Payne
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                Dates

                • Created:
                  Updated:
                  Resolved: