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From Wayne Conrad <wcon...@yagni.com>
Subject Re: Using the API to tell if a compact has been done
Date Mon, 24 Jan 2011 21:00:20 GMT
Ian, That looks easy.  I'll give it a try. Thanks!

Wayne Conrad

On 01/24/11 13:00, Ian Hobson wrote:
> On 24/01/2011 17:49, Wayne Conrad wrote:
>> I've subscribed again, from another email address, because the list
>> decided that my first subscribtion was a eeeeevil spammer. I hope
>> that's OK. Anyhow...
>>
>> I've written a cron job that periodically compacts all databases on
>> all servers, but it needs an automated test, and an automated test
>> needs a way to know that compaction happend (or, at least, was
>> triggered). Other than seeing the file size change, is there anything
>> I can do from the API that will show that my cron job caused
>> compaction to happen?
>>
> Hi Wayne,
>
> If you can create the database you are to compact, then you can use the
> rev=??? parameter.
>
> Set up the database, and note the rev of a document (= oldrev)
> Update the document (creating _rev=newrev). oldrev is now on disk, but
> not normally available.
>
> Read the old version using the rev=oldrev parameter.
>
> Trigger the compaction and wait for it to finish (A 1 record database
> won't take long to compact :) )
>
> Read the old record again. This time it won't be found if the compaction
> has run.
>
> See
> http://wiki.apache.org/couchdb/HTTP_Document_API#Accessing_Previous_Revisions
>
>
> Regards
>
> Ian
>
>
>


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