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  1. Cassandra
  2. CASSANDRA-10505

Duplicate range tombstones

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Normal
    • Resolution: Duplicate
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Severity:
      Normal

      Description

      I don't have a way to reproduce this just yet, but I have the sstables to prove it and can provide those offline. What I can reproduce, however, is the magnification of this problem via compaction. Here's what I know so far:

      • under some condition, we flush the exact same RT more than once in the same sstable. Same timestamps, everything.
      • Once this happens in multiple sstables, compacting them causes the duplication to grow. The more this occurs, the worse the problem gets.

      This continues until gc_grace has passed, then they are all evicted normally. I'd at least like to take a look at the compaction amplification for now, that way if the condition does occur, at least compaction can help it, rather than exacerbate it.

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              • Assignee:
                Unassigned
                Reporter:
                brandon.williams Brandon Williams
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                Dates

                • Created:
                  Updated:
                  Resolved: