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Posted to jira@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/12/29 18:03:00 UTC

[jira] [Updated] (ARROW-11058) [Rust] [DataFusion] Implement "coalesce batches" operator

     [ https://issues.apache.org/jira/browse/ARROW-11058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-11058:
-----------------------------------
    Labels: pull-request-available  (was: )

> [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
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.0.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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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