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https://issues.apache.org/jira/browse/SOLR-2066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen updated SOLR-2066:
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Attachment: SOLR-2066.patch
Attached a rough initial approach for better distributed grouping. This solves
distributed grouping in 3 steps. First round trip for getting top groups,
second round trip to group documents inside a top group and a third round trip
to get the stored fields.
The following parameters will never give correct with this approach:
* group.truncate
* group.ngroups
Some current issues / todos:
* The group.field parameter is now the only supported command.
* In distributed mode group.format=grouped is only the supported format.
* There is some issue with sorting now when a group sort / normal sort has null
values.
* Need more tests.
* The code is a bit hacked together now, so there is needs to be cleaned up and
restructured.
Other than that it seems to work.
> Search Grouping: support distributed search
> -------------------------------------------
>
> Key: SOLR-2066
> URL: https://issues.apache.org/jira/browse/SOLR-2066
> Project: Solr
> Issue Type: Sub-task
> Reporter: Yonik Seeley
> Fix For: 3.4, 4.0
>
> Attachments: SOLR-2066.patch, SOLR-2066.patch, SOLR-2066.patch
>
>
> Support distributed field collapsing / search grouping.
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