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  1. Hadoop HDFS
  2. HDFS-1112

Edit log buffer should not grow unboundedly

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.22.0
    • 0.22.0
    • namenode
    • None
    • Reviewed

    Description

      Currently HDFS does not impose an upper limit on the edit log buffer. In case there are a large number of open operations coming in with access time update on, since open does not call sync automatically, there is a possibility that the buffer grow to a large size, therefore causes memory leak and full GC in extreme cases as described in HDFS-1104.

      The edit log buffer should be automatically flushed when the buffer becomes full.

      Attachments

        1. editLogBuf.patch
          23 kB
          Hairong Kuang
        2. editLogBuf1.patch
          24 kB
          Hairong Kuang
        3. editLogBuf2.patch
          15 kB
          Hairong Kuang
        4. editLogBuf3.patch
          13 kB
          Hairong Kuang

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-3020 Auto-logSync based on edit log buffer size broken

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Activity

            People

              hairong Hairong Kuang
              hairong Hairong Kuang
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              Dates

                Created:
                Updated:
                Resolved: