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  1. Hadoop HDFS
  2. HDFS-3979

Fix hsync semantics

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 2.0.2-alpha
    • 2.0.3-alpha
    • datanode
    • None
    • Reviewed

    Description

      See discussion in HDFS-744. The actual sync/flush operation in BlockReceiver is not on a synchronous path from the DFSClient, hence it is possible that a DN loses data that it has already acknowledged as persisted to a client.

      Edit: Spelling.

      Attachments

        1. hdfs-3979-v4.txt
          3 kB
          Lars Hofhansl
        2. hdfs-3979-v3.txt
          3 kB
          Lars Hofhansl
        3. hdfs-3979-v2.txt
          2 kB
          Lars Hofhansl
        4. hdfs-3979-sketch.txt
          3 kB
          Lars Hofhansl

        Issue Links

          blocks

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-5954 Allow proper fsync support for HBase

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

          New Feature - A new feature of the product, which has yet to be developed. HDFS-744 Support hsync in HDFS

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. HDFS-4060 TestHSync#testSequenceFileSync failed

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              larsh Lars Hofhansl
              larsh Lars Hofhansl
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              Dates

                Created:
                Updated:
                Resolved: