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From "Shahar Davidson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2894) Implement distributed pivot faceting
Date Mon, 18 Mar 2013 12:18:15 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605053#comment-13605053
] 

Shahar Davidson commented on SOLR-2894:
---------------------------------------

Hi Andrew (and Chris), I just wanted to report a problem that we found in the patch from Jan
14th.

In short, the problem seems to be related to facet.limit and the symptom is that a distributed
pivot returns less terms than expected.

Here's a simple scenario:
If I run a (non-distributed) pivot such as:
{noformat}http://myHost:8999/solr/core-A/select?q=*:*&wt=xml&facet=true&facet.pivot=field_A,field_B&rows=0&facet.limit=-1&facet.sort=count{noformat}
then I would get N terms for field_A. (where, in my case, N is in the thousands)

BUT, if I run a distributed pivot such as:
{noformat}http://myHost:8999/solr/core-B/select?shards=myHost:8999/solr/core-A&q=*:*&wt=xml&facet=true&facet.pivot=field_A,field_B&rows=0&facet.limit=-1&facet.sort=count{noformat}
then I would get _at most_ 160 terms for field_A.
(Why exactly 160?? I have no idea)

On the other hand, if I use f.<field_name>.facet.limit=-1 then things work as expected.
For example:
{noformat}http://myHost:8999/solr/core-B/select?shards=myHost:8999/solr/core-A&q=*:*&wt=xml&facet=true&facet.pivot=field_A,field_B&rows=0&f.field_A.facet.limit=-1&f.field_B.facet.limit=-1&facet.sort=count{noformat}
This will return exactly N terms for field_A as expected.

I'll appreciate your help with this.

Shahar.
                
> Implement distributed pivot faceting
> ------------------------------------
>
>                 Key: SOLR-2894
>                 URL: https://issues.apache.org/jira/browse/SOLR-2894
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Erik Hatcher
>             Fix For: 4.3
>
>         Attachments: SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch,
SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch, SOLR-2894.patch,
SOLR-2894-reworked.patch
>
>
> Following up on SOLR-792, pivot faceting currently only supports undistributed mode.
 Distributed pivot faceting needs to be implemented.

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