godfreyhe opened a new pull request #9035: [FLINK-13168] [table] clarify 
isBatch/isStreaming/isBounded flag in flink planner and blink planner
URL: https://github.com/apache/flink/pull/9035
 
 
   
   
   ## What is the purpose of the change
   
   *clarify isBatch/isStreaming/isBounded flag in flink planner and blink 
planner
   1. isBatch in ConnectorCatalogTable, which tells if the 
tableSource/tableSink is BatchTableSource/BatchTableSink
   2. isBatch in TableSourceQueryOperation, which tells if the tableSource is 
BatchTableSource
   3. isStreaming in TableSourceTable, which tells if if the current table is 
on stream planner
   4. bounded StreamTableSource could be used for both batch and stream, while 
unbounded StreamTableSource could only be used for stream.
   *
   
   
   ## Brief change log
   
     - *Add comments for `isBatch` in 
ConnectorCatalogTable&TableSourceQueryOperation, and where to use it*
     - *Add isBatchMode flag into XXXSchema to tell if the current planner 
should work in a batch or streaming mode in blink planner*
     - *rename isStreaming to isStreamMode to distinguish isBatch flag in 
(TableSourceTable)*
   
   
   ## Verifying this change
   
   all existing test should be passed, and add several tests to validate 
bounded & unbounded table source in blink planner
   
   
   ## 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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