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  1. Hadoop HDFS
  2. HDFS-8211

DataNode UUID is always null in the JMX counter

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.7.0
    • 2.8.0, 3.0.0-alpha1
    • datanode
    • None
    • Reviewed

    Description

      The DataNode JMX counters are tagged with DataNode UUID, but it always gets a null value instead of the UUID.

      Hadoop:service=DataNode,name=FSDatasetState*-null*.

      This null is supposed be the datanode UUID.

      Attachments

        1. hdfs-8211.002.patch
          4 kB
          Anu Engineer
        2. hdfs-8211.001.patch
          6 kB
          Anu Engineer

        Issue Links

          is related to

          Test - A new unit, integration or system test. HDFS-9949 Add a test case to ensure that the DataNode does not regenerate its UUID when a storage directory is cleared

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

          Activity

            People

              aengineer Anu Engineer
              aengineer Anu Engineer
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              Dates

                Created:
                Updated:
                Resolved: