Niel Markwick created BEAM-14171:
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Summary: 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: 2.37.0, 2.36.0
Reporter: Niel Markwick
Assignee: Robert Bradshaw
Fix For: 2.38.0
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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