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  1. Hadoop HDFS
  2. HDFS-12390

Support to refresh DNS to switch mapping

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Details

    • New Feature
    • Status: Patch Available
    • Major
    • Resolution: Unresolved
    • None
    • None
    • hdfs, hdfs-client
    • None

    Description

      As described in HDFS-12200, ScriptBasedMapping may lead to NN cpu 100%. ScriptBasedMapping run sub_processor to get rack info of DN/Client, so we think it's a little heavy. We prepare to use TableMappingļ¼Œbut TableMapping does not support refresh and can not reload rack info of newly added DataNodes.
      So we implement refreshDNSToSwitch in dfsadmin.

      Attachments

        1. HDFS-12390.002.patch
          16 kB
          Jiandan Yang
        2. HDFS-12390.001.patch
          16 kB
          Jiandan Yang
        3. HDFS-12390-branch-2.8.2.001.patch
          16 kB
          Jiandan Yang

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-8231 Make topologies easier to set up and debug

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Open

          Activity

            People

              yangjiandan Jiandan Yang
              yangjiandan Jiandan Yang
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              Dates

                Created:
                Updated: