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https://issues.apache.org/jira/browse/ASTERIXDB-2174?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Lychagin resolved ASTERIXDB-2174.
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Resolution: Fixed
> Improve partitioning property propagation in
> AbstractPreclusteredGroupByPOperator
> ---------------------------------------------------------------------------------
>
> Key: ASTERIXDB-2174
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-2174
> Project: Apache AsterixDB
> Issue Type: Improvement
> Components: COMP - Compiler
> Reporter: Dmitry Lychagin
> Assignee: Dmitry Lychagin
> Priority: Minor
>
> Currently AbstractPreclusteredGroupByPOperator propagates its input
> partitioning property as is. For example if "gby var1 as var2" and input is
> partitioned on "var1" the output partitioning would also be reported on
> "var1". The problem is that "var1" is not visible after the group by. The
> variable in the output partitioning property should be changed from "var1" to
> "var2" because both these variables are bound to the same value and "var2" is
> visible after the group by.
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