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  1. Hadoop HDFS
  2. HDFS-12249

dfsadmin -metaSave to output maintenance mode blocks

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0
    • Component/s: namenode
    • Labels:
      None
    • Target Version/s:
    • Hadoop Flags:
      Reviewed

      Description

      Found while reviewing for HDFS-12182.

      After the patch, the output of metaSave is:
      Live Datanodes: 0
      Dead Datanodes: 0
      Metasave: Blocks waiting for reconstruction: 0
      Metasave: Blocks currently missing: 1
      file16387: blk_0_1 MISSING (replicas: l: 0 d: 0 c: 2 e: 0) 1.1.1.1:9866(corrupt) (block deletions maybe out of date) : 2.2.2.2:9866(corrupt) (block deletions maybe out of date) :
      Mis-replicated blocks that have been postponed:
      Metasave: Blocks being reconstructed: 0
      Metasave: Blocks 0 waiting deletion from 0 datanodes.
      Corrupt Blocks:
      Block=0 Node=1.1.1.1:9866 StorageID=s1 StorageState=NORMAL TotalReplicas=2 Reason=GENSTAMP_MISMATCH
      Block=0 Node=2.2.2.2:9866 StorageID=s2 StorageState=NORMAL TotalReplicas=2 Reason=GENSTAMP_MISMATCH
      Metasave: Number of datanodes: 0

      Looking at the output
      The output is not user friendly — The meaning of "(replicas: l: 0 d: 0 c: 2 e: 0)" is not obvious without looking at the code.
      Also, it should print maintenance mode replicas.

        Attachments

        1. HDFS-12249.001.patch
          7 kB
          Wellington Chevreuil

          Activity

            People

            • Assignee:
              wchevreuil Wellington Chevreuil
              Reporter:
              jojochuang Wei-Chiu Chuang
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              Dates

              • Created:
                Updated:
                Resolved: