[jira] [Closed] (SOLR-8556) Add ConcatOperation to be used with the SelectStream

["Dennis Gove (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-8556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dennis Gove closed SOLR-8556.
-----------------------------
       Resolution: Implemented
    Fix Version/s: Trunk

> 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
>             Fix For: Trunk
>
>         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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