Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-1597

Batched edit log syncs can reset synctxid throw assertions

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 0.22.0
    • Fix Version/s: 0.22.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      The top of FSEditLog.logSync has the following assertion:

              assert editStreams.size() > 0 : "no editlog streams";
      

      which should actually come after checking to see if the sync was already batched in by another thread.

      This is related to a second bug in which the same case causes synctxid to be reset to 0

      1. illustrate-test-failure.txt
        2 kB
        Todd Lipcon
      2. hdfs-1597.txt
        8 kB
        Todd Lipcon
      3. hdfs-1597.txt
        8 kB
        Todd Lipcon
      4. hdfs-1597.txt
        8 kB
        Todd Lipcon

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            • Assignee:
              Todd Lipcon
              Reporter:
              Todd Lipcon
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              Dates

              • Created:
                Updated:
                Resolved:

                Development