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  1. HBase
  2. HBASE-24659

Calculate FIXED_OVERHEAD automatically

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 3.0.0-alpha-1, 2.4.0
    • None
    • None
    • Reviewed

    Description

      Now the FIXED_OVERHEAD in some classes are maintained manually, an we have a method to TestHeapSizes to confirm that the value is correct.

      But it is really hard for developers to count the fields in a complicated class like HRegion. Since we have the ability to calcuate the accurate size in UT, I think we it is also possible to calcuate it when loading the class, which is a one time operation so should not effect the performance too much.

      Attachments

        1. 50M-performance.pdf
          52 kB
          Yulin Niu

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-27437 TestHeapSize is flaky

          • Major - Major loss of function.
          • Resolved
          links to

          Web Link GitHub Pull Request #2018

          Activity

            People

              niuyulin Yulin Niu
              zhangduo Duo Zhang
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              Dates

                Created:
                Updated:
                Resolved: