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From Nikolai Kopylov <kopy...@gmail.com>
Subject Re: disable compaction
Date Wed, 20 Jul 2011 20:35:38 GMT
Thanx a lot Edward, will follow your advice.

On Wed, Jul 20, 2011 at 7:28 PM, Edward Capriolo <edlinuxguru@gmail.com>wrote:

>
>
> On Wed, Jul 20, 2011 at 11:13 AM, Nikolai Kopylov <kopylov@gmail.com>wrote:
>
>> Hi everyone,
>>
>> finding out recently that cassandra have no upper limit for sstable files
>> to grow, I decided to move to deletion of CF with obsolete data.
>> So that I will not remove columns and there is no need in compaction at
>> all. How can I completely disable the compaction process?
>>
>> Thanx for your attention,
>> Nikolai
>>
>>
> This can be done from the CLI.
> [default@unknown] help update column family;
> update column family Bar;
> update column family Bar with <att1>=<value1>;
> update column family Bar with <att1>=<value1> and <att2>=<value2>...;
>
>     - min_compaction_threshold: Avoid minor compactions of less than this
> number of sstable files
>     - max_compaction_threshold: Compact no more than this number of sstable
> files at once
>
> update column family xxx with min_compaction_threshold=0 and
> max_compaction_threshold=0;
>
> Rolling over data into new column families is one extreme way to avoid
> compaction :)
>
> Edward
>
>


-- 
C уважением, Николай.

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