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From Viktor Jevdokimov <>
Subject Consurrent compactors
Date Wed, 01 Feb 2012 08:48:41 GMT

When concurrent compactors are set to more then 1, it's rare when more than 1 compaction is
running in parallel.

Didn't checked the source code, but it looks like when next compaction task (any of minor,
major, or cleanup) is for the same CF, it will not start in parallel and next tasks are not

Will it be possible to check all tasks, not only the next one, to find which of them can be

This is actual especially when nightly cleanup is running, a lot of cleanup tasks are pending,
regular minor compactions are waiting until all cleanup compactions are finished.

Best regards/ Pagarbiai

Viktor Jevdokimov

Senior Developer


Phone: +370 5 212 3063. Fax: +370 5 261 0453

J. Jasinskio 16C, LT-01112 Vilnius, Lithuania

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