Brandon Williams created CASSANDRA-10505:
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Summary: Duplicate range tombstones
Key: CASSANDRA-10505
URL: https://issues.apache.org/jira/browse/CASSANDRA-10505
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Brandon Williams
Fix For: 2.1.x
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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