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  1. Hadoop HDFS
  2. HDFS-5076

Add MXBean methods to query NN's transaction information and JournalNode's journal status

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 3.0.0-alpha1
    • Fix Version/s: 2.1.1-beta
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Currently NameNode already provides RPC calls to get its last applied transaction ID and most recent checkpoint's transaction ID. It can be helpful to provide support to enable querying these information through JMX, so that administrators and applications like Ambari can easily decide if a forced checkpoint by calling saveNamespace is necessary. Similarly we can add MxBean interface for JournalNodes to query the status of journals (e.g., whether journals are formatted or not).

        Attachments

        1. HDFS-5076.001.patch
          11 kB
          Jing Zhao
        2. HDFS-5076.002.patch
          6 kB
          Jing Zhao
        3. HDFS-5076.003.patch
          11 kB
          Jing Zhao
        4. HDFS-5076.004.patch
          13 kB
          Jing Zhao
        5. HDFS-5076.005.patch
          13 kB
          Jing Zhao

          Activity

            People

            • Assignee:
              jingzhao Jing Zhao
              Reporter:
              jingzhao Jing Zhao
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              Dates

              • Created:
                Updated:
                Resolved: