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https://issues.apache.org/jira/browse/BEAM-10164?focusedWorklogId=440432&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-440432
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ASF GitHub Bot logged work on BEAM-10164:
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Author: ASF GitHub Bot
Created on: 02/Jun/20 20:38
Start Date: 02/Jun/20 20:38
Worklog Time Spent: 10m
Work Description: dmvk commented on pull request #11889:
URL: https://github.com/apache/beam/pull/11889#issuecomment-637792716
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Issue Time Tracking
-------------------
Worklog Id: (was: 440432)
Time Spent: 0.5h (was: 20m)
> Flink: Memory efficient combine implementation for batch runner
> ---------------------------------------------------------------
>
> Key: BEAM-10164
> URL: https://issues.apache.org/jira/browse/BEAM-10164
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: David Morávek
> Assignee: David Morávek
> Priority: P2
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Current Combine implementation assumes that all input values for a single key
> (on both map and reduce side) fit in memory as it needs to sort them by
> window before combining.
> We can easily optimize this for non-merging windows by pre-grouping elements
> by (K, W) tuples.
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