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From kurt greaves <>
Subject Re: Cassandra isn't compacting old files
Date Wed, 23 Aug 2017 10:08:49 GMT
Ignore me, I was getting the major compaction for LCS mixed up with STCS.
Estimated droppable tombstones tends to be fairly accurate. If your
SSTables in level 2 have that many tombstones I'd say that's definitely the
reason L3 isn't being compacted.

As for how you got here in the first place, hard to say. Maybe a burst of
writes over a period a long time ago? Or possibly repairs streaming a lot
of data? Hard to tell what happened in the past without lots of metrics.

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