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Date: Fri, 24 Feb 2017 18:37:57 -0500 (EST)
From: Joan Touzet <wohali@apache.org>
Reply-To: Joan Touzet <wohali@apache.org>
To: user@couchdb.apache.org
Message-ID: <29604577.2769.1487979779350.JavaMail.Joan@RITA>
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Subject: Re: views failing due to fabric_worker_timeout and OS process timed
 out
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Thread-Topic: views failing due to fabric_worker_timeout and OS process timed out
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archived-at: Fri, 24 Feb 2017 23:43:22 -0000

So glad Mango worked well for you! In effect, Mango uses the same
mapreduce functionality under the covers as a traditional JS view,
but the implementation is optimized and the domain-specific language
is intended to be convenient and friendly to use.

Correct. couchapps are, in effect, deprecated functionality. There
should be ways to enable that functionality in future versions of
CouchDB, but it most likely won't be the default configuration, and
performance will not be optimized for couchapps.

-Joan

----- Original Message -----
> From: "Gustavo Delfino" <Gustavo.Delfino@zf.com>
> To: user@couchdb.apache.org
> Sent: Friday, February 24, 2017 4:41:52 PM
> Subject: RE: views failing due to fabric_worker_timeout and OS process timed out
> 
> I tried using Mango and the index builds without errors and much
> faster. This is great, however I am trying to understand how this
> fits with the rest of CouchDB. In particular, with Mango it looks
> like we no longer "You query your view to retrieve the view result"
> and this would imply that converting couchapps to Mango is not
> trivial. Is this correct?
> 
> Regards,
> 
> Gustavo Delfino
> 
> -----Original Message-----
> From: Joan Touzet [mailto:wohali@apache.org]
> Sent: Thursday, February 23, 2017 5:43 PM
> To: user@couchdb.apache.org
> Subject: Re: views failing due to fabric_worker_timeout and OS
> process timed out
> 
> Switching to Mango would be best. :)
> 
> 
> ----- Original Message -----
> > From: "Gustavo Delfino" <Gustavo.Delfino@zf.com>
> > To: user@couchdb.apache.org, "Joan Touzet" <wohali@apache.org>
> > Sent: Thursday, February 23, 2017 3:19:31 PM
> > Subject: RE: views failing due to fabric_worker_timeout and OS
> > process
> > timed out
> > 
> > I installed CouchDB 1.6.1 on a separate machine and copied all the
> > data. Initially it failed too, but then I read about increasing the
> > memory to couchjs.exe and now it seems to be working (the view is
> > 50%
> > ready after a few hours):
> > 
> > http://stackoverflow.com/questions/21273736/couchdb-views-os-process-e
> > rror-big-documents
> > 
> > I changed [query_servers] javascript from
> > 
> > ./couchjs.exe  ../share/couchdb/server/main.js
> > 
> > to
> > 
> > ./couchjs.exe -S 268435456 ../share/couchdb/server/main.js
> > 
> > This is four times the default amount of memory.
> > 
> > Unfortunately this doesn't work with CouchDB 2.0.0 (see
> > https://github.com/apache/couchdb-couch/pull/216 )
> > 
> > Do you think that switching to Erlang view server would better for
> > handling big documents?
> > 
> > Regards,
> > 
> > Gustavo Delfino
> 
>