Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-3990

NN's health report has severe performance problems

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Critical Critical
    • Resolution: Fixed
    • Affects Version/s: 0.23.0, 2.0.0-alpha, 3.0.0
    • Fix Version/s: 2.0.3-alpha, 0.23.5
    • Component/s: namenode
    • Labels:
      None

      Description

      The dfshealth page will place a read lock on the namespace while it does a dns lookup for every DN. On a multi-thousand node cluster, this often results in 10s+ load time for the health page. 10 concurrent requests were found to cause 7m+ load times during which time write operations blocked.

      1. HDFS-3990.patch
        10 kB
        Daryn Sharp
      2. HDFS-3990.patch
        13 kB
        Daryn Sharp
      3. hdfs-3990.txt
        4 kB
        Eli Collins
      4. HDFS-3990.patch
        11 kB
        Daryn Sharp
      5. HDFS-3990.patch
        11 kB
        Daryn Sharp
      6. hdfs-3990.txt
        13 kB
        Eli Collins
      7. HDFS-3990.patch
        12 kB
        Daryn Sharp
      8. HDFS-3990.patch
        10 kB
        Daryn Sharp
      9. HDFS-3990.branch-0.23.patch
        13 kB
        Daryn Sharp
      10. HDFS-3990.patch
        9 kB
        Daryn Sharp
      11. HDFS-3990.branch-0.23.patch
        12 kB
        Daryn Sharp
      12. HDFS-3990.patch
        9 kB
        Daryn Sharp

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            People

            • Assignee:
              Daryn Sharp
              Reporter:
              Daryn Sharp
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              Dates

              • Created:
                Updated:
                Resolved:

                Development