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  1. Hadoop HDFS
  2. HDFS-11303

Hedged read might hang infinitely if read data from all DN failed

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0-alpha1
    • 2.9.0, 3.0.0-beta1
    • hdfs-client
    • None

    Description

      Hedged read will read from a DN first, if timeout, then read other DNs simultaneously.
      If read all DN failed, this bug will cause the future-list not empty(the first timeout request left in list), and hang in the loop infinitely

      Attachments

        1. HDFS-11303.005.patch
          6 kB
          John Zhuge
        2. HDFS-11303.004.patch
          6 kB
          John Zhuge
        3. HDFS-11303.003.patch
          6 kB
          Wei-Chiu Chuang
        4. HDFS-11303-002.patch
          5 kB
          Chen Zhang
        5. HDFS-11303-002.patch
          5 kB
          Chen Zhang
        6. HDFS-11303-001.patch
          5 kB
          Michael Stack
        7. HDFS-11303-001.patch
          5 kB
          Chen Zhang

        Issue Links

          fixes

          Bug - A problem which impairs or prevents the functions of the product. HBASE-24469 Hedged read might hang infinitely if read data from all DN failed

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

          Bug - A problem which impairs or prevents the functions of the product. HDFS-14338 TestPread timeouts in branch-2.8

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. HDFS-15822 Client retry mechanism may invalid when use hedgedRead

          • Major - Major loss of function.
          • Patch Available

          Activity

            People

              zhangchen Chen Zhang
              zhangchen Chen Zhang
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              Dates

                Created:
                Updated:
                Resolved: