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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-8556) Add ConcatOperation to be used with the SelectStream
Date Wed, 20 Jan 2016 18:08:39 GMT

    [ https://issues.apache.org/jira/browse/SOLR-8556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109049#comment-15109049
] 

ASF subversion and git services commented on SOLR-8556:
-------------------------------------------------------

Commit 1725769 from dpgove@apache.org in branch 'dev/trunk'
[ https://svn.apache.org/r1725769 ]

SOLR-8556: Add ConcatOperation to be used with the SelectStream

> Add ConcatOperation to be used with the SelectStream
> ----------------------------------------------------
>
>                 Key: SOLR-8556
>                 URL: https://issues.apache.org/jira/browse/SOLR-8556
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Joel Bernstein
>            Assignee: Dennis Gove
>         Attachments: SOLR-8556.patch, SOLR-8556.patch, SOLR-8556.patch, SOLR-8556.patch
>
>
> Now that we have the UpdateStream it would be nice to support the use case of sending
rolled up aggregates for storage in another SolrCloud collection. To support this we'll need
to create id's for the aggregate records.
> The ConcatOperation would allows us to concatenate the bucket values into a unique id.
For example:
> {code}
> update(
>             select( 
>                          rollup(search(q="*:*, fl="a,b,c", ...)), 
>                          concat(fields="a,b,c", delim="_",  as="id")))
> {code}



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