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  1. Hadoop HDFS
  2. HDFS-12946

Add a tool to check rack configuration against EC policies

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.3.0
    • Component/s: erasure-coding
    • Labels:
      None
    • Target Version/s:

      Description

      From testing we have seen setups with problematic racks / datanodes that would not suffice basic EC usages. These are usually found out only after the tests failed.

      We should provide a way to check this beforehand.

      Some scenarios:

      • not enough datanodes compared to EC policy's highest data+parity number
      • not enough racks to satisfy BPPRackFaultTolerant
      • highly uneven racks to satisfy BPPRackFaultTolerant
      • highly uneven racks (so that BPP's considerLoad logic may exclude some busy nodes on the rack, resulting in #2)

        Attachments

        1. HDFS-12946.12.patch
          27 kB
          Wei-Chiu Chuang
        2. HDFS-12946.11.patch
          28 kB
          Kitti Nanasi
        3. HDFS-12946.10.patch
          29 kB
          Kitti Nanasi
        4. HDFS-12946.09.patch
          29 kB
          Kitti Nanasi
        5. HDFS-12946.08.patch
          30 kB
          Kitti Nanasi
        6. HDFS-12946.07.patch
          30 kB
          Kitti Nanasi
        7. HDFS-12946.06.patch
          27 kB
          Kitti Nanasi
        8. HDFS-12946.05.patch
          29 kB
          Kitti Nanasi
        9. HDFS-12946.04.fsck.patch
          20 kB
          Kitti Nanasi
        10. HDFS-12946.03.patch
          32 kB
          Kitti Nanasi
        11. HDFS-12946.02.patch
          35 kB
          Kitti Nanasi
        12. HDFS-12946.01.patch
          15 kB
          Xiao Chen

          Activity

            People

            • Assignee:
              knanasi Kitti Nanasi
              Reporter:
              xiaochen Xiao Chen
            • Votes:
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              Dates

              • Created:
                Updated:
                Resolved: