Andy Grove created ARROW-11058:
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Summary: [Rust] [DataFusion] Implement "coalesce batches" operator
Key: ARROW-11058
URL: https://issues.apache.org/jira/browse/ARROW-11058
Project: Apache Arrow
Issue Type: Improvement
Components: Rust - DataFusion
Reporter: Andy Grove
Assignee: Andy Grove
Fix For: 3.0.0
When we have a FilterExec in the plan, it can produce lots of small batches and
we therefore lose efficiency of vectorized operations.
We should implement a new CoalesceBatchExec and wrap every FilterExec with one
of these so that small batches can be recombined into larger batches to improve
the efficiency of upstream operators.
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