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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/07/30 15:02:00 UTC
[jira] [Commented] (FLINK-9997) Improve Expression Reduce

    [ https://issues.apache.org/jira/browse/FLINK-9997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16561997#comment-16561997 ] 

ASF GitHub Bot commented on FLINK-9997:
---------------------------------------

Xpray opened a new pull request #6455: [FLINK-9997][TableAPI & SQL] Improve Expression Reduce
URL: https://github.com/apache/flink/pull/6455
 
 
   ## What is the purpose of the change
   Improve Expression Reduce
   
   ## Brief change log
   make Project and Filter to Calc and let ReduceExpression.Calc to reduce Calc, then remove Calc if necessary.
   
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   org.apache.flink.table.plan.ExpressionReductionRulesTest.testReduceDeterministicUDF
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector:  no
   
   ## Documentation
   
     - Does this pull request introduce a new feature?  no
     - If yes, how is the feature documented?  no
   

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> Improve Expression Reduce
> -------------------------
>
>                 Key: FLINK-9997
>                 URL: https://issues.apache.org/jira/browse/FLINK-9997
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API &amp; SQL
>            Reporter: Ruidong Li
>            Assignee: Ruidong Li
>            Priority: Major
>              Labels: pull-request-available
>
> RepressionReduce do not reduce some expressions.



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