[GitHub] XuQianJin-Stars opened a new pull request #7450: [FLINK-11296][Table API & SQL] Support truncate in TableAPI

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XuQianJin-Stars opened a new pull request #7450: [FLINK-11296][Table API & SQL] Support truncate in TableAPI
URL: https://github.com/apache/flink/pull/7450
 
 
   ## What is the purpose of the change
   
   *This PR   add `truncate` as core scalar operators in then codegen.*
   
   ## Brief change log
   
   *(for example:)*
   
   - docs/dev/table/functions.md
   - table/api/scala/expressionDsl.scala
   - table/codegen/calls/BuiltInMethods.scala
   - table/codegen/calls/FunctionGenerator.scala
   - table/expressions/mathExpressions.scala
   - table/validate/FunctionCatalog.scala
   - table/expressions/ScalarFunctionsTest.scala
   - table/expressions/SqlExpressionTest.scala
   
   ## Verifying this change
   
   *(Please pick either of the following options)*
   
   This change added tests in `ScalarOperatorsTest` and `SqlExpressionTest`
   
   *(example:)*
   
   - *Added integration tests for end-to-end deployment with large payloads (100MB)*
   - *Extended integration test for recovery after master (JobManager) failure*
   - *Added test that validates that TaskInfo is transferred only once across recoveries*
   - *Manually verified the change by running a 4 node cluser with 2 JobManagers and 4 TaskManagers, a stateful streaming program, and killing one JobManager and two TaskManagers during the execution, verifying that recovery happens correctly.*
   
   ## 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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