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https://issues.apache.org/jira/browse/SOLR-8593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15622328#comment-15622328
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Kevin Risden commented on SOLR-8593:
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Avatica 1.9 (and Calcite 1.11) is because this needs avatica-core that doesn't
do shading. The shading was causing problems integrating into Solr (forget the
exact errors now). I saw that Calcite 1.10 requires Avatica 1.8 so just copied
the one offending file for now. Since Avatica 1.9 was just released, I'll
switch from the SNAPSHOT to the release and should be able to use 1.11 SNAPSHOT
since the compatibility fixes for 1.9 were included for Calcite now.
> Integrate Apache Calcite into the SQLHandler
> --------------------------------------------
>
> Key: SOLR-8593
> URL: https://issues.apache.org/jira/browse/SOLR-8593
> Project: Solr
> Issue Type: Improvement
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
>
> The Presto SQL Parser was perfect for phase one of the SQLHandler. It was
> nicely split off from the larger Presto project and it did everything that
> was needed for the initial implementation.
> Phase two of the SQL work though will require an optimizer. Here is where
> Apache Calcite comes into play. It has a battle tested cost based optimizer
> and has been integrated into Apache Drill and Hive.
> This work can begin in trunk following the 6.0 release. The final query plans
> will continue to be translated to Streaming API objects (TupleStreams), so
> continued work on the JDBC driver should plug in nicely with the Calcite work.
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