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  1. Accumulo
  2. ACCUMULO-4782

With many threads scanning seeing lock contention on SessionManager

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 1.7.3, 1.8.1
    • 1.9.0
    • None

    Description

      While profiling many threads doing small scans against accumulo, lock contention on the tablet servers SessionManager was high.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. ACCUMULO-4811 Session manager does not always act on cleanUp() return

          • Major - Major loss of function.
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. ACCUMULO-4810 Make session manager reservations more strict

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

          Bug - A problem which impairs or prevents the functions of the product. ACCUMULO-4809 Session manager clean up can happen when lock held.

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          links to

          Web Link GitHub Pull Request #382

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              kturner Keith Turner
              kturner Keith Turner
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                Updated:
                Resolved:

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