[jira] [Commented] (ARROW-11068) [Rust] [DataFusion] Wrap more operators in CoalesceBatchExec

["Andrew Lamb (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-11068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332334#comment-17332334 ] 

Andrew Lamb commented on ARROW-11068:
-------------------------------------

Migrated to github: https://github.com/apache/arrow-datafusion/issues/139

> [Rust] [DataFusion] Wrap more operators in CoalesceBatchExec
> ------------------------------------------------------------
>
>                 Key: ARROW-11068
>                 URL: https://issues.apache.org/jira/browse/ARROW-11068
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust - DataFusion
>            Reporter: Andy Grove
>            Assignee: Andy Grove
>            Priority: Major
>
> Once [https://github.com/apache/arrow/pull/9043] is merged, we should extend this to wrap HashJoinExec and HashAggregateExec as well since they can both produce small batches.
> Rather than hard-code a list of operators that need to be wrapped, we should find a more generic mechanism so that plans can declare if their input and/or output batches should be coalesced (similar to how we handle partitioning) and this would allow custom operators outside of DataFusion to benefit from this optimization.



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