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https://issues.apache.org/jira/browse/CALCITE-594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-594.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0-incubating

Fixed as 
http://git-wip-us.apache.org/repos/asf/incubator-calcite/commit/18d4f70a.

> 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
>             Fix For: 1.1.0-incubating
>
>
> 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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