Thanks, this does look like what I'm experiencing. Can someone
post a walkthrough ? The README and the sstablesplit script
don't seem to cover it use in any detail.

Jim

From: Colin Blower <cblo...@barracuda.com<mailto:cblo...@barracuda.com>>
Reply-To: <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Wed, 17 Jul 2013 16:49:59 -0700
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" 
<user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: sstable size ?

Take a look at the very recent thread called 'Alternate "major compaction"'. 
There are some ideas in there about splitting up a large SSTable.

http://www.mail-archive.com/user@cassandra.apache.org/msg30956.html


On 07/17/2013 04:17 PM, Langston, Jim wrote:
Hi all,

Is there a way to get an SSTable to a smaller size ? By this I mean that I
currently have an SSTable that is nearly 1.2G, so that subsequent SSTables
when they compact are trying to grow to that size. The result is that when
the min_compaction_threshold reaches it value and a compaction is needed,
the compaction is taking a long time as the file grows (it is currently at 52MB 
and
takes ~22s to compact).

I'm not sure how the SSTable initially grew to its current size of 1.2G, since 
the
servers have been up for a couple of years. I hadn't noticed until I just 
upgraded to 1.2.6,
but now I see it affects everything.


Jim


--
Colin Blower
Software Engineer
Barracuda Networks Inc.
+1 408-342-5576 (o)

Reply via email to