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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2015/02/17 00:42:12 UTC

[jira] [Commented] (CALCITE-594) Add RelDistribution trait and Exchange relational expression

    [ https://issues.apache.org/jira/browse/CALCITE-594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14323453#comment-14323453 ] 

Julian Hyde commented on CALCITE-594:
-------------------------------------

[~ashutoshc], [~amansinha100], [~jni], I have a proposed fix at https://github.com/julianhyde/incubator-calcite/tree/calcite-594. Please review.

> Add RelDistribution trait and Exchange relational expression
> ------------------------------------------------------------
>
>                 Key: CALCITE-594
>                 URL: https://issues.apache.org/jira/browse/CALCITE-594
>             Project: Calcite
>          Issue Type: New Feature
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>
> Calcite is increasingly targeting to support distributed execution engines. Any distributed sql engine has Shuffle/Exchange operator to shuffle their data with other deamons in the runtime system. It will be useful to add a notion of {{Shuffle}} RelNode as a first class citizen in Calcite.



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