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  1. Hadoop HDFS
  2. HDFS-9314

Improve BlockPlacementPolicyDefault's picking of excess replicas

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.8.0, 2.7.3, 2.6.4, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      The test case used in HDFS-9313 identified NullPointerException as well as the limitation of excess replica picking. If the current replicas are on

      {SSD(rack r1), DISK(rack 2), DISK(rack 3), DISK(rack 3)}

      and the storage policy changes to HOT_STORAGE_POLICY_ID, BlockPlacementPolicyDefault's won't be able to delete SSD replica.

      Attachments

        1. HDFS-9314.001.patch
          3 kB
          Xiao Chen
        2. HDFS-9314.002.patch
          4 kB
          Xiao Chen
        3. HDFS-9314.003.patch
          7 kB
          Xiao Chen
        4. HDFS-9314.004.patch
          19 kB
          Xiao Chen
        5. HDFS-9314.005.patch
          21 kB
          Xiao Chen
        6. HDFS-9314.006.patch
          21 kB
          Xiao Chen
        7. HDFS-9314.branch26.patch
          15 kB
          Xiao Chen
        8. HDFS-9314.branch27.patch
          15 kB
          Xiao Chen

        Issue Links

        is duplicated by

        Bug - A problem which impairs or prevents the functions of the product. HDFS-8770 ReplicationMonitor thread received Runtime exception: NullPointerException when BlockManager.chooseExcessReplicates

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

        Improvement - An improvement or enhancement to an existing feature or task. HDFS-9440 Improve BlockPlacementPolicyDefault's to be able to rebalance when picking of excess replicas

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

        Bug - A problem which impairs or prevents the functions of the product. HDFS-9313 Possible NullPointerException in BlockManager if no excess replica can be chosen

        • Major - Major loss of function.
        • Closed

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          People

            xiaochen Xiao Chen Assign to me
            mingma Ming Ma
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            Dates

              Created:
              Updated:
              Resolved:

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