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  1. Phoenix
  2. PHOENIX-2939

MetaCache is easily thrashed with default settings

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 4.8.0
    • None
    • None

    Description

      With default settings for phoenix.coprocessor.maxMetaDataCacheSize (20mb) and phoenix.stats.guidepost.width (100mb * 3), even a relatively small amount of data (ie 10TB, 2000 regions) will easily produce more stats data than fits in the cache. This quickly leads us into a situation where we thrash the cache and spend an inordinate amount of time (re)scanning SYSTEM.STATS table.

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          is related to

          Improvement - An improvement or enhancement to an existing feature or task. PHOENIX-2940 Remove STATS RPCs from rowlock

          • Major - Major loss of function.
          • Closed

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              Unassigned Unassigned
              ndimiduk Nick Dimiduk
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              Dates

                Created:
                Updated:
                Resolved: