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https://issues.apache.org/jira/browse/SOLR-7903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711371#comment-14711371
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Joel Bernstein commented on SOLR-7903:
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Initial patch with basic tests. Does one level of facets with functions. Still
lot's to do on this ticket but the patch shows the basic idea of how the
FacetStream works.
> Add the FacetStream to the Streaming API
> ----------------------------------------
>
> Key: SOLR-7903
> URL: https://issues.apache.org/jira/browse/SOLR-7903
> Project: Solr
> Issue Type: New Feature
> Components: clients - java
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Fix For: Trunk
>
> Attachments: SOLR-7903.patch
>
>
> This ticket is to add a FacetStream class to the Streaming API. The
> FacetStream will abstract the results from the JSON Facet API as a Stream of
> Tuples. This will provide a complementary stream to the RollupStream which
> uses Map/Reduce for aggregations.
> When the FacetStream is hooked into the SQL interface it will allow users to
> switch between the RollupStream (Map/Reduce) and the FacetStream (JSON Facet
> API) as the underlying engine for SQL Group By aggregates.
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