cloud-fan opened a new pull request #23430: [SPARK-26520][SQL] data source v2 
API refactor (micro-batch read)
URL: https://github.com/apache/spark/pull/23430
 
 
   ## What changes were proposed in this pull request?
   
   Following https://github.com/apache/spark/pull/23086, this PR does the API 
refactor for micro-batch read, w.r.t. the doc 
[proposal](https://docs.google.com/document/d/1uUmKCpWLdh9vHxP7AWJ9EgbwB_U6T3EJYNjhISGmiQg/edit?usp=sharing)
   
   The major changes:
   1. rename `XXXMicroBatchReadSupport` to `XXXMicroBatchReadStream`
   2. implement `Table`, `ScanBuilder` and `Scan` for streaming sources
   3. at the beginning of micro-batch streaming execution, convert 
`StreamingRelationV2` to `StreamingDataSourceV2Relation` directly, instead of 
`StreamingExecutionRelation`.
   
   followup:
   support operator pushdown for stream sources
   
   ## How was this patch tested?
   
   existing tests

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
[email protected]


With regards,
Apache Git Services

---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]

Reply via email to