incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Langston, Jim" <Jim.Langs...@compuware.com>
Subject Re: sstable size ?
Date Thu, 18 Jul 2013 18:59:20 GMT
I have been looking at the stuff in the zip file, and also the
sstablesplit command script. This script is looking for a java
class StandaloneSplitter located in the package org.apache.cassandra.tools.

Where is this package located ? I looked in the lib directory but nothing contains
the class. Is this something I need to get as well ?

Thanks,

Jim

From: "Langston, Jim" <Jim.Langston@compuware.com<mailto:Jim.Langston@compuware.com>>
Reply-To: <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Thu, 18 Jul 2013 10:28:39 +0000
To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: sstable size ?

I saw that msg in the thread, I pulled the git files and it looks
like a suite of tools, do I install them on their own ? do I replace the
current ones ? its production data but I can copy the data to where
I want and experiment.

Jim

From: aaron morton <aaron@thelastpickle.com<mailto:aaron@thelastpickle.com>>
Reply-To: <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Date: Thu, 18 Jul 2013 21:41:24 +1200
To: <user@cassandra.apache.org<mailto:user@cassandra.apache.org>>
Subject: Re: sstable size ?

Does this help ? http://www.mail-archive.com/user@cassandra.apache.org/msg30973.html

Can you pull the data off the node so you can test it somewhere safe ?

Cheers

-----------------
Aaron Morton
Cassandra Consultant
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 18/07/2013, at 2:20 PM, "Langston, Jim" <Jim.Langston@compuware.com<mailto:Jim.Langston@compuware.com>>
wrote:

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 <cblower@barracuda.com<mailto:cblower@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)


Mime
View raw message