[jira] [Created] (ASTERIXDB-2174) Improve partitioning property propagation in AbstractPreclusteredGroupByPOperator

["Dmitry Lychagin (JIRA)" <ji...@apache.org>]

Dmitry Lychagin created ASTERIXDB-2174:
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             Summary: 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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