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From Phil Luckhurst <phil.luckhu...@powerassure.com>
Subject RE: Can SSTables overlap with SizeTieredCompactionStrategy?
Date Thu, 22 May 2014 21:46:40 GMT
Hi Andreas,

So does that mean it can compact the 'hottest' partitions into a new sstable
but the old sstables may not immediately be removed so the same data could
be in more that one sstable? That would certainly explain the difference we
see when we manually run nodetool compact.

Thanks
Phil


Andreas Finke wrote
> Hi Phil,
> 
> I found an interesting blog entry that may address your problem.
> 
> http://www.datastax.com/dev/blog/optimizations-around-cold-sstables
> 
> It seems that compaction is skipped for stables which so mit satisfy a
> certain read rate. Please check.
> 
> 
> Kind regards
> 
> Andreas Finke
> Java Developer
> Solvians IT-Solutions GmbH
> 
> 
> ---- Phil Luckhurst wrote ----
> 
> Definitely no TTL and records are only written once with no deletions.
> 
> Phil
> 
> 
> DuyHai Doan wrote
>> Are you sure there is no TTL set on your data? It might explain the
>> shrink
>> in sstable size after compaction.
> 
> 
> 
> 
> 
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