Hadoop HDFS
  1. Hadoop HDFS
  2. HDFS-412

Hadoop JMX usage makes Nagios monitoring impossible

    Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.21.0
    • Component/s: None
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      When Hadoop reports Datanode information to JMX, the bean uses the name "DataNode-" + storageid. The storage ID incorporates a random number and is unpredictable.

      This prevents me from monitoring DFS datanodes through Hadoop using the JMX interface; in order to do that, you must be able to specify the bean name on the command line.

      The fix is simple, patch will be coming momentarily. However, there was probably a reason for making the datanodes all unique names which I'm unaware of, so it'd be nice to hear from the metrics maintainer.

      1. hadoop-4482.patch
        3 kB
        Tom White
      2. hdfs-412.patch
        3 kB
        Tom White
      3. jmx_name_replaced.patch
        0.7 kB
        Brian Bockelman
      4. jmx_name.patch
        0.7 kB
        Brian Bockelman

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            • Assignee:
              Brian Bockelman
              Reporter:
              Brian Bockelman
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              • Created:
                Updated:
                Resolved:

                Development