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From Filipe David Manana <fdman...@gmail.com>
Subject Re: _revs_limit and _compact in 0.11
Date Tue, 08 Jun 2010 16:09:34 GMT
Erick, the ticket is at:  https://issues.apache.org/jira/browse/COUCHDB-789

On Tue, Jun 8, 2010 at 4:54 PM, Filipe David Manana <fdmanana@gmail.com>wrote:

> It's definitely a bug.
> I am looking at the compaction code, and it doesn't preserve the revs_limit
> parameter in the compacted DB.
>
> I'll create a JIRA ticket, submit a patch and let you know about it.
>
>
> On Tue, Jun 8, 2010 at 4:24 PM, Erick Johnson <ejohnson82@gmail.com>wrote:
>
>> Hi all,
>>
>> I'm beginning to get familiar with the administrative functions of couchdb
>> 0.11
>> and had a question about rev limits and compaction.  In my testing it
>> seems
>> rev limits are being reset to the default 1000 after I run _compact, even
>> though the wiki states otherwise:
>>
>> "_revs_limit defines a upper bound of document revisions which CouchDB
>> keeps track of, even after Compaction"
>>
>> http://wiki.apache.org/couchdb/HTTP_database_API#Accessing_Database-specific_options
>>
>> For instance if I run the following series of curl commands that create a
>> new db,set the revs limit, get the revs limit, run compact, and get the revs
>> limit again I see that the revs limit gets reset.
>>
>> Searching jira for "_revs_limit" doesn't return any results,  so if anyone
>> could shed any light on the subject for me I would greatly appreciate it.
>>
>> Thank you,
>>
>> Erick Johnson
>>
>> curl and server logs follow....
>>
>> $ curl -XPUT http://erick:foobar@127.0.0.40:5984/testing-compaction
>> {"ok":true}
>> $ curl -XPUT
>> http://erick:foobar@127.0.0.40:5984/testing-compaction/_revs_limit -d
>> "100"
>> {"ok":true}
>> $ curl http://erick:foobar@127.0.0.40:5984/testing-compaction/_revs_limit
>> 100
>> $ curl -XPOST
>> http://erick:foobar@127.0.0.40:5984/testing-compaction/_compact
>> {"ok":true}
>> $ curl http://erick:foobar@127.0.0.40:5984/testing-compaction/_revs_limit
>> 1000
>>
>> The associated debug level server logs are as follows:
>>
>> [debug] [<0.207.0>] 'PUT' /testing-compaction {1,1}
>> Headers: [{'Accept',"*/*"},
>>          {'Authorization',"Basic ZXJpY2s6Zm9vYmFy"},
>>          {'Host',"127.0.0.40:5984"},
>>          {'User-Agent',"curl/7.15.5 (x86_64-redhat-linux-gnu)
>> libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5"}]
>> [debug] [<0.207.0>] OAuth Params: []
>> [info] [<0.207.0>] 127.0.0.40 - - 'PUT' /testing-compaction 201
>> [debug] [<0.214.0>] 'PUT' /testing-compaction/_revs_limit {1,1}
>> Headers: [{'Accept',"*/*"},
>>          {'Authorization',"Basic ZXJpY2s6Zm9vYmFy"},
>>          {'Content-Length',"3"},
>>          {'Content-Type',"application/x-www-form-urlencoded"},
>>          {'Host',"127.0.0.40:5984"},
>>          {'User-Agent',"curl/7.15.5 (x86_64-redhat-linux-gnu)
>> libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5"}]
>> [debug] [<0.214.0>] OAuth Params: []
>> [info] [<0.214.0>] 127.0.0.40 - - 'PUT' /testing-compaction/_revs_limit
>> 200
>> [debug] [<0.227.0>] 'GET' /testing-compaction/_revs_limit {1,1}
>> Headers: [{'Accept',"*/*"},
>>          {'Authorization',"Basic ZXJpY2s6Zm9vYmFy"},
>>          {'Host',"127.0.0.40:5984"},
>>          {'User-Agent',"curl/7.15.5 (x86_64-redhat-linux-gnu)
>> libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5"}]
>> [debug] [<0.227.0>] OAuth Params: []
>> [info] [<0.227.0>] 127.0.0.40 - - 'GET' /testing-compaction/_revs_limit
>> 200
>> [debug] [<0.246.0>] 'POST' /testing-compaction/_compact {1,1}
>> Headers: [{'Accept',"*/*"},
>>          {'Authorization',"Basic ZXJpY2s6Zm9vYmFy"},
>>          {'Host',"127.0.0.40:5984"},
>>          {'User-Agent',"curl/7.15.5 (x86_64-redhat-linux-gnu)
>> libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5"}]
>> [debug] [<0.246.0>] OAuth Params: []
>> [info] [<0.218.0>] Starting compaction for db "testing-compaction"
>> [info] [<0.246.0>] 127.0.0.40 - - 'POST' /testing-compaction/_compact 202
>> [debug] [<0.269.0>] Compaction process spawned for db "testing-compaction"
>> [debug] [<0.80.0>] New task status for testing-compaction: Flushing
>> [debug] [<0.218.0>] CouchDB swapping files
>> /home/erick/local/var/lib/couchdb/testing-compaction.couch and
>> /home/erick/local/var/lib/couchdb/testing-compaction.couch.compact.
>> [info] [<0.218.0>] Compaction for db "testing-compaction" completed.
>> [debug] [<0.268.0>] 'GET' /testing-compaction/_revs_limit {1,1}
>> Headers: [{'Accept',"*/*"},
>>          {'Authorization',"Basic ZXJpY2s6Zm9vYmFy"},
>>          {'Host',"127.0.0.40:5984"},
>>          {'User-Agent',"curl/7.15.5 (x86_64-redhat-linux-gnu)
>> libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5"}]
>> [debug] [<0.268.0>] OAuth Params: []
>> [info] [<0.268.0>] 127.0.0.40 - - 'GET' /testing-compaction/_revs_limit
>> 200
>>
>
>
>
> --
> Filipe David Manana,
> fdmanana@gmail.com
>
> "Reasonable men adapt themselves to the world.
> Unreasonable men adapt the world to themselves.
> That's why all progress depends on unreasonable men."
>
>


-- 
Filipe David Manana,
fdmanana@gmail.com

"Reasonable men adapt themselves to the world.
Unreasonable men adapt the world to themselves.
That's why all progress depends on unreasonable men."

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