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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/06/15 08:47:02 UTC

[GitHub] [flink] godfreyhe opened a new pull request #8747: [FLINK-12856] [table-planner-blink] Introduce planner rule to push projection into TableSource

godfreyhe opened a new pull request #8747: [FLINK-12856] [table-planner-blink] Introduce planner rule to push projection into TableSource
URL: https://github.com/apache/flink/pull/8747
 
 
   
   
   ## What is the purpose of the change
   
   *[FLINK-12856] [table-planner-blink] Introduce planner rule to push projection into TableSource*
   
   
   ## Brief change log
   
     - *Added PushProjectIntoTableSourceScanRule that pushes projection into TableSource*
     - *Added RexNodeExtractor to extract used field from expressions*
     - *Added RexNodeRewriter to rewrite expressions based on new indexes*
   
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
     - *Added PushProjectIntoTableSourceScanRuleTest that validates logical plan after PushProjectIntoTableSourceScanRule is applied*
     - *Added TableSourceTest that validates the physical plan for the projectable table source*
     - *Added TableSourceITCase that validates the execution result for the projectable table source*
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (yes / **no**)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)
     - The serializers: (yes / **no** / don't know)
     - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
     - The S3 file system connector: (yes / **no** / don't know)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / **no**)
     - If yes, how is the feature documented? (not applicable / docs / JavaDocs / **not documented**)
   

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