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  1. Cassandra
  2. CASSANDRA-2698

Instrument repair to be able to assess it's efficiency (precision)

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Details

    • Improvement
    • Status: Resolved
    • Low
    • Resolution: Fixed
    • 2.0.1
    • None

    Description

      Some reports indicate that repair sometime transfer huge amounts of data. One hypothesis is that the merkle tree precision may deteriorate too much at some data size. To check this hypothesis, it would be reasonably to gather statistic during the merkle tree building of how many rows each merkle tree range account for (and the size that this represent). It is probably an interesting statistic to have anyway.

      Attachments

        1. trunk-2698.txt
          34 kB
          Benedict Elliott Smith
        2. patch-rebased.diff
          35 kB
          Benedict Elliott Smith
        3. patch.taketwo.forreview.diff
          42 kB
          Benedict Elliott Smith
        4. patch.taketwo.alpha.diff
          26 kB
          Benedict Elliott Smith
        5. patch.diff
          34 kB
          Benedict Elliott Smith
        6. patch_2698_v1.txt
          7 kB
          Ivan Sobolev
        7. nodetool_repair_and_cfhistogram.tar.gz
          6 kB
          Jason Wee

        Issue Links

        is related to

        Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-5398 Remove localTimestamp from merkle-tree calculation (for tombstones)

        • Low -
        • Resolved
        relates to

        Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-4905 Repair should exclude gcable tombstones from merkle-tree computation

        • Normal -
        • Resolved

        Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-4917 Optimize tombstone creation for ExpiringColumns

        • Normal -
        • Resolved

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          People

            benedict Benedict Elliott Smith Assign to me
            slebresne Sylvain Lebresne
            Benedict Elliott Smith
            Yuki Morishita
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            Dates

              Created:
              Updated:
              Resolved:

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