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  1. Cassandra
  2. CASSANDRA-5745

Minor compaction tombstone-removal deadlock

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    Details

    • Type: Improvement
    • Status: Open
    • Priority: Low
    • Resolution: Unresolved
    • Fix Version/s: 4.x
    • Component/s: Local/Compaction
    • Labels:
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      Description

      From a discussion with Axel Liljencrantz,

      If you have two SSTables that have temporally overlapping data, you can get lodged into a state where a compaction of SSTable A can't drop tombstones because SSTable B contains older data and vice versa. Once that's happened, Cassandra should be wedged into a state where CASSANDRA-4671 no longer helps with tombstone removal. The only way to break the wedge would be to perform a compaction containing both SSTable A and SSTable B.

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              • Assignee:
                Unassigned
                Reporter:
                jbellis Jonathan Ellis
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                • Created:
                  Updated: