Uploaded image for project: 'Hadoop HDFS'
  1. Hadoop HDFS
  2. HDFS-14849

Erasure Coding: the internal block is replicated many times when datanode is decommissioning

    XMLWordPrintableJSON

Details

    • Reviewed

    Description

      colored textWhen the datanode keeping in DECOMMISSION_INPROGRESS status, the EC internal block in that datanode will be replicated many times.

      // added 2019/09/19
      I reproduced this scenario in a 163 nodes cluster with decommission 100 nodes simultaneously.

      Attachments

        1. HDFS-14849.branch-3.1.patch
          5 kB
          Wei-Chiu Chuang
        2. liveBlockIndices.png
          450 kB
          HuangTao
        3. HDFS-14849.002.patch
          5 kB
          HuangTao
        4. fsck-file.png
          2.89 MB
          HuangTao
        5. scheduleReconstruction.png
          124 kB
          HuangTao
        6. HDFS-14849.001.patch
          5 kB
          HuangTao

        Issue Links

          is duplicated by

          Sub-task - The sub-task of the issue HDFS-14450 Erasure Coding: decommissioning datanodes cause replicate a large number of duplicate EC internal blocks

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              marvelrock HuangTao
              marvelrock HuangTao
              Votes:
              0 Vote for this issue
              Watchers:
              8 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: