[GitHub] [flink] JingsongLi opened a new pull request #8492: [FLINK-12563][table-runtime-blink] Introduce vector data format in blink

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

JingsongLi opened a new pull request #8492: [FLINK-12563][table-runtime-blink] Introduce vector data format in blink
URL: https://github.com/apache/flink/pull/8492
 
 
   ## What is the purpose of the change
   
   Introduce vector data format to high performance parquet/orc source.
   
   ## Brief change log
   
   Introduce `VectorizedColumnBatch`: A `VectorizedColumnBatch` is a set of rows, organized with each column as a vector.
   Introduce `ColumnVector` with subclasses: `IntColumnVector`, `LongColumnVector` and etc..
   Introduce `ColumnarRow`: wrap `VectorizedColumnBatch` as a `BaseRow`.
   
   Let `IntColumnVector` and others to be a interface:
   1.We can support OrcXXVector with not copy data from OrcVector
   2.In the future, we can support OffHeapXXVectors
   Performance: we should keep a single implement XXColumnVector in JVM. Otherwise we need to bear the overhead of virtual function calls.
   
   ## Verifying this change
   
   ut
   
   ## 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? (yes)
     - If yes, how is the feature documented? (JavaDocs)
   

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


With regards,
Apache Git Services