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https://issues.apache.org/jira/browse/SOLR-13404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16823171#comment-16823171
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Munendra S N commented on SOLR-13404:
-------------------------------------

 [^SOLR-13404.patch] 
This patch
* adds support to return group.query response in distrib mode when 
group.main=true or group.format=simple
* Also, fixes SOLR-4181
* Respects group.limit and group.offset when group.format=grouped and 
group.query is specified in distrib
* handles negative values for group.offset. Currently, AIOOBE is thrown for -ve 
values

With this patch, group.query in distrib mode mimics the behavior of group.query 
in standalone mode.
One case not handled is when rows is -ve which is allowed in grouping. Negative 
value for rows in distributed grouped doesn't work properly and this issue is 
not limited group.query(it affects group.field too). Probably, will spinoff new 
issue for that

> group.query doesn't work in distrib mode when group.format=simple
> -----------------------------------------------------------------
>
>                 Key: SOLR-13404
>                 URL: https://issues.apache.org/jira/browse/SOLR-13404
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Munendra S N
>            Priority: Major
>         Attachments: SOLR-13404.patch
>
>
> While working on SOLR-12248, found that for group.query response is returned 
> only when group.format=grouped(default format) in distrib mode. For 
> group.main=true, request fails with AIOOE and for group.format=simple, no 
> grouped is returned



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