[jira] [Commented] (SOLR-7560) Parallel SQL Support

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[jira] [Commented] (SOLR-7560) Parallel SQL Support

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/SOLR-7560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14637989#comment-14637989 ]

Joel Bernstein commented on SOLR-7560:

Investigating using the Apache Calcite SQL parser rather the Presto SQL parser. Calcite is Java 7 compatible and used by Hive and Drill, so we'll be in good company.

> Parallel SQL Support
> --------------------
>                 Key: SOLR-7560
>                 URL: https://issues.apache.org/jira/browse/SOLR-7560
>             Project: Solr
>          Issue Type: New Feature
>          Components: clients - java, search
>            Reporter: Joel Bernstein
>             Fix For: 5.3
>         Attachments: SOLR-7560.patch, SOLR-7560.patch, SOLR-7560.patch, SOLR-7560.patch
> This ticket provides support for executing *Parallel SQL* queries across SolrCloud collections. The SQL engine will be built on top of the Streaming API (SOLR-7082), which provides support for *parallel relational algebra* and *real-time map-reduce*.
> Basic design:
> 1) A new SQLHandler will be added to process SQL requests. The SQL statements will be compiled to live Streaming API objects for parallel execution across SolrCloud worker nodes.
> 2) SolrCloud collections will be abstracted as *Relational Tables*.
> 3) The Presto SQL parser will be used to parse the SQL statements.
> 4) A JDBC thin client will be added as a Solrj client.
> This ticket will focus on putting the framework in place and providing basic SELECT support and GROUP BY aggregate support.
> Future releases will build on this framework to provide additional SQL features.

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