Konstantin Knauf created FLINK-22389:
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Summary: Expose Message Batches to SDKs
Key: FLINK-22389
URL: https://issues.apache.org/jira/browse/FLINK-22389
Project: Flink
Issue Type: New Feature
Components: Stateful Functions
Reporter: Konstantin Knauf
Stateful Functions always invokes a functions with a batch of messages. Under
normal operations the batch size=1 (no batching).
If a function is slow and backpressure arises, the batch size grows, though.
From an SDK perspective, this batching is not visible. The function is always
invoked with a single message. This makes it impossible to efficiently evaluate
the whole batch at once (e.g. with pandas).
This issue was requested in
http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Flink-Statefun-Python-Batch-tp43022.html.
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