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Brandon Williams resolved CASSANDRA-10505. ------------------------------------------ Resolution: Duplicate Yeah, I think it was the fact that they were in a single sstable that threw me off, since the memtable should absorb those, but if it all comes down to a compaction problem it makes sense. Resolving as duplicate for 7953. > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)