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  1. Cassandra
  2. CASSANDRA-4885

Remove or rework per-row bloom filters

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Details

    • Improvement
    • Status: Resolved
    • Normal
    • Resolution: Fixed
    • 2.0 beta 1
    • None
    • None

    Description

      Per-row bloom filters may be a misfeature.

      On small rows we don't create them.

      On large rows we essentially only do slice queries that can't take advantage of it.

      And on very large rows if we ever did deserialize it, the performance hit of doing so would outweigh the benefit of skipping the actual read.

      Attachments

        1. 0001-CASSANRDA-4885-Remove-per-row-bloom-filter.patch
          25 kB
          Jason Brown
        2. 0002-CASSANRDA-4885-update-test.patch
          2 kB
          Jason Brown
        3. 4885-v1.patch
          74 kB
          Jason Brown
        4. 4885-v2.patch
          21 kB
          Jason Brown

        Issue Links

          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-5385 IndexHelper.skipBloomFilters won't skip non-SHA filters

          • Normal -
          • Resolved
          is depended upon by

          Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-4180 Single-pass compaction for LCR

          • Normal -
          • Resolved

          Activity

            People

              jasobrown Jason Brown
              jbellis Jonathan Ellis
              Jason Brown
              Jonathan Ellis
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              Dates

                Created:
                Updated:
                Resolved: