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https://issues.apache.org/jira/browse/COUCHDB-599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791899#action_12791899
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Karel Minařík commented on COUCHDB-599:
---------------------------------------
This issue is INVALID:
head.total_rows is available only for views without reduce() function OR when
`?reduce=false` is specified. (#couchdb> rnewson: We don't know up-front how
many rows will remain after a reduce.)
The attached test fails because a list function needs to execute both send()
AND return.
(I think it would be helpful to un-comment the tests for `head.total_rows` in
test suite (list_views.js), so it's transparent for other who may be hit by
this.)
Thanks to Robert Newson for helping me to figure and sort this out!
Karel
> `head.total_rows` returns empty in a _list function
> ---------------------------------------------------
>
> Key: COUCHDB-599
> URL: https://issues.apache.org/jira/browse/COUCHDB-599
> Project: CouchDB
> Issue Type: Bug
> Components: Database Core, Test Suite
> Affects Versions: 0.10, 0.11
> Environment: Mac OS X 10.5.8, Mac Book Air, CouchDB 0.10.0 (mac
> ports) and trunk
> Reporter: Karel Minařík
>
> In a _list function defined like this:
> function (head, req) {
> return 'Total: ' + head.total_rows;
> }
> the `head.total_rows` is undefined.
> I have created a test case for the issue in this patch (against Git repo at
> github.com/apache/couchdb):
> -->
> http://gist.github.com/255972#file_couchdb_head_total_rows_in_list__fail.diff
> See the map/reduce and list function definition in the gist, also the full db
> dump is included.
> This fails for me on CouchDB 0.10.0 and 0.11.0b77473d79-git.
> There are tests for `head.total_rows` commented out in the test cases
> (list_views.js, see
> http://github.com/apache/couchdb/blob/trunk/share/www/script/test/list_views.js#L65-68
> and
> http://github.com/apache/couchdb/blob/trunk/share/www/script/test/list_views.js#L265)
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