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https://issues.apache.org/jira/browse/BEAM-14171?focusedWorklogId=747754&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-747754
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ASF GitHub Bot logged work on BEAM-14171:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 25/Mar/22 12:02
Start Date: 25/Mar/22 12:02
Worklog Time Spent: 10m
Work Description: nielm commented on pull request #17180:
URL: https://github.com/apache/beam/pull/17180#issuecomment-1078962291
> R: @nielm Could you let me know if this looks good to you?
Confirmed that this resolves the issue in my test repro code, and also in my
'real world' pipeline.
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Issue Time Tracking
-------------------
Worklog Id: (was: 747754)
Time Spent: 0.5h (was: 20m)
> CoGroupByKey loses values with large groups on Dataflow v1
> ----------------------------------------------------------
>
> Key: BEAM-14171
> URL: https://issues.apache.org/jira/browse/BEAM-14171
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow, sdk-java-core
> Affects Versions: 2.36.0, 2.37.0
> Reporter: Niel Markwick
> Assignee: Robert Bradshaw
> Priority: P1
> Fix For: 2.38.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> CoGroupByKey can lose elements - replacing them with null values when a group
> is large (>10,000 elements).
>
> This only occurs in dataflow v1, not dataflow-v2 runner
> Possibly related to BEAM-13541.
>
> https://lists.apache.org/thread/5y56kbgm3q0m1byzf7186rrkomrcfldm
>
>
>
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