[jira] [Commented] (BEAM-13541) Use runtime information to improve CoGroupByKey caching

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-13541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17498211#comment-17498211 ] 

Beam JIRA Bot commented on BEAM-13541:
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This issue is assigned but has not received an update in 30 days so it has been labeled "stale-assigned". If you are still working on the issue, please give an update and remove the label. If you are no longer working on the issue, please unassign so someone else may work on it. In 7 days the issue will be automatically unassigned.

> Use runtime information to improve CoGroupByKey caching
> -------------------------------------------------------
>
>                 Key: BEAM-13541
>                 URL: https://issues.apache.org/jira/browse/BEAM-13541
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-ideas
>            Reporter: Sunil Pedapudi
>            Assignee: Robert Bradshaw
>            Priority: P2
>              Labels: stale-assigned
>             Fix For: 2.36.0
>
>          Time Spent: 6.5h
>  Remaining Estimate: 0h
>
> Currently, CoGroupByKey creates UnionTables that are Flattened. The Flattened output is processed by a GroupByKey to produce a CoGbkResult (via ConstructCoGbkResultFn). 
>  
> Given the performance of CoGBK is greatly impacted based on the which elements are cached in the (finitely sized) in-memory results, it would be useful if CoGbkResult can use runtime information to prioritize which elements are stored in-memory.



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