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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-4233) overlapping sstables in leveled compaction strategy
Date Thu, 17 May 2012 16:58:08 GMT


Sylvain Lebresne commented on CASSANDRA-4233:

I'd submit that my version was giving a slightly better feedback through JMX but I guess that's
not a big deal.

But other than that, the definition of isCompactionDisabled so far has been to disallow automatic
compaction, but forced compaction ("maximal" ones) was still allowed. v2 change that for LCS.
I'll note that disabling compaction was respected for background tasks by LCS by the fact
that DataTracker.maxCompacting was skipping compaction when maxCompactionThreshold is 0, but
allowed for maximal tasks since the maxCompactionThreshold is overriden in compactionManager
in that case. I don't know if it's a big deal though (I suspect some tests would fail if run
with LCS because they rely on that) but wanted to mention it.
> overlapping sstables in leveled compaction strategy
> ---------------------------------------------------
>                 Key: CASSANDRA-4233
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>             Fix For: 1.1.1
>         Attachments: 0001-Make-sure-Leveled-compaction-always-use-the-right-min-.txt,
4233-assert.txt, 4233-v2.txt, 4233-v3.txt, system.log.bz2
> CASSANDRA-4142 introduces test failures, that are caused by overlapping tables within
a level, which Shouldn't Happen.

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