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From Jan Lehnardt <...@apache.org>
Subject Re: [jira] Closed: (COUCHDB-78) CouchDB crashed Erland
Date Thu, 12 Jun 2008 21:45:45 GMT

On Jun 12, 2008, at 21:47, Сергей Курцев wrote:

> Damien,
>
> thanks for you replies. I've put them into wiki since it will be  
> useful
> to others
> http://wiki.apache.org/couchdb/Compaction

Good thinking, thanks Sergey!

Cheers
Jan
--

>
>
> With best regards,
> Sergey.
>
> On Thu, 12/06/2008 at 15:02 -0400, Damien Katz wrote:
>> CouchDB works like this to have the least impact possible on
>> clients,
>> the database remains online and fully functional to readers and
>> writers. Yes, its a design limitation that database compaction can't
>> complete when at capacity for write load, however I don't think its
>> unreasonable to schedule compactions during off-peak hours either.
>> As
>> you point out, in a clustered environment the write load can
>> switched
>> off for any node during compaction and brought back up to date with
>> replication once complete.
>>
>> In the future, a single couchdb node can be changed to stop or fail
>> other updates if the write load is too heavy for it to complete in a
>> reasonable time.
>
>


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