[GitHub] [flink] walterddr opened a new pull request #8389: [FLINK-12399][table] Fix FilterableTableSource does not change after applyPredicate

[GitBox <gi...@apache.org>]

walterddr opened a new pull request #8389: [FLINK-12399][table] Fix FilterableTableSource does not change after applyPredicate
URL: https://github.com/apache/flink/pull/8389
 
 
   ## What is the purpose of the change
   
   This PR fixes the problem: FilterableTableSource does not generate a new digest after the predicate push down, unless `explainSource()` API is explicitly override. 
   
   ## Brief change log
   
   
     - Changed the `explainTerm` API from `FlinkLogicalTableSourceScan` to include auxiliary source description.
     - Changed the `TestFilterableTableSource` to include both the none explainSource and with explainSource version.
     - Added test to both stream and batch cases.
   
   ## Verifying this change
   
     - Tests for both stream and batch cases for predicate push down without explainSource override.
     - Others are covered for current tests.
   
   ## 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? n/a
   

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