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  1. Apache Cassandra
  2. CASSANDRA-7019

Improve tombstone compactions

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    Description

      When there are no other compactions to do, we trigger a single-sstable compaction if there is more than X% droppable tombstones in the sstable.

      In this ticket we should try to include overlapping sstables in those compactions to be able to actually drop the tombstones. Might only be doable with LCS (with STCS we would probably end up including all sstables)

      Attachments

        1. temp-plot.html
          1.17 MB
          Philip Thompson
        2. row.tar.gz
          2.25 MB
          Philip Thompson
        3. none.tar.gz
          2.46 MB
          Philip Thompson
        4. control.tar.gz
          2.51 MB
          Philip Thompson
        5. cell.tar.gz
          1.63 MB
          Philip Thompson
        6. 7019-debug.log
          770 kB
          Philip Thompson
        7. 7019-2-system.log
          562 kB
          Philip Thompson

        Issue Links

          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-11316 BTreeRow.hashCode() is broken

          • Low -
          • Resolved
          is depended upon by

          Sub-task - The sub-task of the issue CASSANDRA-7975 Get rid of pre-2.1 created local and remote counter shards

          • Normal -
          • Open
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-8573 Lack of compaction tooling for LeveledCompactionStrategy

          • Normal -
          • Resolved
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-5745 Minor compaction tombstone-removal deadlock

          • Low -
          • Open

          Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-7272 Add "Major" Compaction to LCS and split sstables during STCS major compaction

          • Low -
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-12664 GCCompactionTest is flaky

          • Low -
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. CASSANDRA-16333 Document provide_overlapping_tombstones compaction option

          • Normal -
          • Open

          Activity

            People

              blambov Branimir Lambov
              marcuse Marcus Eriksson
              Branimir Lambov
              Marcus Eriksson
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              9 Vote for this issue
              Watchers:
              39 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: