JingsongLi opened a new pull request #10922: [FLINK-11899][WIP] Introduce ParquetColumnarRowSplitReader URL: https://github.com/apache/flink/pull/10922 ## What is the purpose of the change ParquetColumnarRowSplitReader is introduced to read parquet data in batches. When returning each row of data, instead of actually retrieving each field, we use BaseRow's abstraction to return a Columnar Row-like view. This will greatly improve the downstream filtered scenarios, so that there is no need to access redundant fields on the filtered data. ## Brief change log - Introduce ColumnReaders - Introduce ParquetColumnarRowSplitReader ## Verifying this change `ParquetColumnarRowSplitReaderTest` ## 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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