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  1. Hadoop HDFS
  2. HDFS-1257

Race condition on FSNamesystem#recentInvalidateSets introduced by HADOOP-5124

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.23.0
    • 0.23.0, 1.0.0
    • namenode
    • None
    • Reviewed

    Description

      HADOOP-5124 provided some improvements to FSNamesystem#recentInvalidateSets. But it introduced unprotected access to the data structure recentInvalidateSets. Specifically, FSNamesystem.computeInvalidateWork accesses recentInvalidateSets without read-lock protection. If there is concurrent activity (like reducing replication on a file) that adds to recentInvalidateSets, the name-node crashes with a ConcurrentModificationException.

      Attachments

        1. HDFS-1257.1.20110810.patch
          5 kB
          Eric Payne
        2. HDFS-1257.2.20110812.patch
          15 kB
          Eric Payne
        3. HDFS-1257.3.20110815.patch
          16 kB
          Eric Payne
        4. HDFS-1257.4.20110816.patch
          18 kB
          Eric Payne
        5. HDFS-1257.5.20110817.patch
          7 kB
          Eric Payne
        6. HDFS-1257.patch
          1.0 kB
          Ramkumar Vadali
        7. HDFS-1257-branch-0.20-security.patch
          1 kB
          Jitendra Nath Pandey

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HDFS-2273 Refactor BlockManager.recentInvalidateSets to a new class

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed
          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-5124 A few optimizations to FsNamesystem#RecentInvalidateSets

          • Major - Major loss of function.
          • Closed

          Activity

            People

              epayne Eric Payne
              rvadali Ramkumar Vadali
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              Dates

                Created:
                Updated:
                Resolved: