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From aaron morton <>
Subject Re: SSTable compaction issue in our system
Date Wed, 25 Jan 2012 00:19:52 GMT
The issue with major / manual compaction is that it creates a one file. One big old file. 

That one file will not be compacted unless there are (min_compaction_threshold -1) other files
of a similar size. So thombstones and overwrites in that file may not be purged for a long

If you go down the manual compaction path you need to keep doing it.

If you feel you need to do it do it, otherwise let automatic compaction do it's thing. 
Aaron Morton
Freelance Developer

On 25/01/2012, at 12:47 PM, Roshan wrote:

> Thanks for the reply. Is the major compaction not recommended for Cassandra
> 1.0.6?
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