hequn8128 opened a new pull request #7289: [FLINK-11001][table] Fix window 
rowtime attribute can't be renamed bug in Java
URL: https://github.com/apache/flink/pull/7289
 
 
   
   ## What is the purpose of the change
   
   This pull request fixes the bug that window rowtime attribute can't be 
renamed in Java. It also changes the alias logic for proctime and rowtime 
fields in source, so it will **break** backward compatibility. 
   
   The reason to change the alias logic in source is that we should make all 
alias logic consistent, as described in the 
jira(https://issues.apache.org/jira/browse/FLINK-11001).
   
   
   ## Brief change log
   
     - Support time attribute alias in `ExpressionParser`.
     - Change time attribute alias logic in source.
     - Add tests.
   
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
     - Added tests in `AggregateStringExpressionTest` to test proctime and 
rowtime rename.
   
   
   ## 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)

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