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  1. HBase
  2. HBASE-20233

[metrics] Ill-formatted numRegions metric in "Hadoop:service=HBase,name=RegionServer,sub=Regions" mbean

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.0.0
    • Component/s: metrics, Operability
    • Labels:
    • Tags:
      beginner

      Description

      Noticed this poking at metrics. The MBean "Hadoop:service=HBase,name=RegionServer,sub=Regions" carries per region metrics. They are all formatted like so:

      Namespace_default_table_IntegrationTestBigLinkedList_metric_incrementTime_98th_percentile: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_incrementTime_99th_percentile: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_incrementTime_99.9th_percentile: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_appendTime_num_ops: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_appendTime_min: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_appendTime_max: 0,
      Namespace_default_table_IntegrationTestBigLinkedList_metric_appendTime_mean: 0,
      

      In the middle of them all is a metric named...

      numRegions: 15,
      

      It has a different format and it is out of scope when compared to the other metrics in this mbean; it belongs better elsewhere, perhaps in the Server bean.

      I noticed it because it breaks the parse done by tcollector scraping our metrics from /jmx

      It was added long ago in HBASE-14166

        Attachments

        1. HBASE-20233.patch
          2 kB
          Xu Cang
        2. HBASE-20233-v1.patch
          2 kB
          Xu Cang

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            People

            • Assignee:
              xucang Xu Cang
              Reporter:
              stack Michael Stack
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              Dates

              • Created:
                Updated:
                Resolved: