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  1. Hadoop Common
  2. HADOOP-5897

Add more Metrics to Namenode to capture heap usage

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.21.0
    • metrics
    • None
    • Reviewed

    Description

      Recently we had GC issues, where Namenode used more heap than usual. There was no growth indicated by the data in current Metrics to justify the heap usage. Adding more stats such as:

      • Counter to track blocks that are pending deletion
      • BlocksMap hashmap capacity
      • Counter to track excess number of blocks

      Attachments

        1. stats.patch
          21 kB
          Suresh Srinivas
        2. stats.patch
          21 kB
          Suresh Srinivas
        3. stats.1.patch
          21 kB
          Suresh Srinivas
        4. 5897.rel20.patch
          20 kB
          Suresh Srinivas

        Activity

          People

            sureshms Suresh Srinivas
            sureshms Suresh Srinivas
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            Dates

              Created:
              Updated:
              Resolved: