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From: Andreas Finke <Andreas.Finke@solvians.com>
To: "user@cassandra.apache.org" <user@cassandra.apache.org>
Subject: RE: Can SSTables overlap with SizeTieredCompactionStrategy?
Thread-Topic: Can SSTables overlap with SizeTieredCompactionStrategy?
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Date: Thu, 22 May 2014 15:28:11 +0000
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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 cert=
ain 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 shrin=
k
> in sstable size after compaction.


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<p dir=3D"ltr">Hi Phil,</p>
<p dir=3D"ltr">I found an interesting blog entry that may address your prob=
lem. </p>
<p dir=3D"ltr"><a href=3D"http://www.datastax.com/dev/blog/optimizations-ar=
ound-cold-sstables">http://www.datastax.com/dev/blog/optimizations-around-c=
old-sstables</a></p>
<p dir=3D"ltr">It seems that compaction is skipped for stables which so mit=
 satisfy a certain read rate. Please check.
<br>
<br>
</p>
<p dir=3D"ltr">Kind regards </p>
<p dir=3D"ltr">Andreas Finke<br>
Java Developer <br>
Solvians IT-Solutions GmbH</p>
<br>
<br>
---- Phil Luckhurst wrote ----<br>
<br>
</div>
<font size=3D"2"><span style=3D"font-size:10pt;">
<div class=3D"PlainText">Definitely no TTL and records are only written onc=
e with no deletions.<br>
<br>
Phil<br>
<br>
<br>
DuyHai Doan wrote<br>
&gt; Are you sure there is no TTL set on your data? It might explain the sh=
rink<br>
&gt; in sstable size after compaction.<br>
<br>
<br>
<br>
<br>
<br>
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ache-org.3065146.n2.nabble.com/Can-SSTables-overlap-with-SizeTieredCompacti=
onStrategy-tp7594574p7594644.html">
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es-overlap-with-SizeTieredCompactionStrategy-tp7594574p7594644.html</a><br>
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