[jira] [Resolved] (FLINK-3505) JoinUnionTransposeRule fails to push Join past Union.

["Fabian Hueske (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fabian Hueske resolved FLINK-3505.
----------------------------------
       Resolution: Resolved
    Fix Version/s: 1.1.0

The JoinUnionTransposeRule was removed from the Flink rule set. It would have pushed a join to all inputs of a union and hence create additional joins and probably additional processing overhead.

> JoinUnionTransposeRule fails to push Join past Union.
> -----------------------------------------------------
>
>                 Key: FLINK-3505
>                 URL: https://issues.apache.org/jira/browse/FLINK-3505
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API
>            Reporter: Chengxiang Li
>             Fix For: 1.1.0
>
>
> {noformat}
> val unionDs = ds1
>       .unionAll(ds2.select('a, 'b, 'c))
>       .join(ds3)
>       .where('a === 'k)
>       .select('a, 'b, 'l)
> {noformat}
> For this query, JoinUnionTransposeRule fails to push push Join past Union. 



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