pyflink.datastream.connectors.file_system.BulkFormat

class BulkFormat(j_bulk_format)

The BulkFormat reads and decodes batches of records at a time. Examples of bulk formats are formats like ORC or Parquet.

Internally in the file source, the readers pass batches of records from the reading threads (that perform the typically blocking I/O operations) to the async mailbox threads that do the streaming and batch data processing. Passing records in batches (rather than one-at-a-time) much reduce the thread-to-thread handover overhead.

For the BulkFormat, one batch is handed over as one.

New in version 1.16.0.