apache / apache/beam

Nexmark: migrate WinningBids to state API in place of custom window merge.

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improvement nexmark P3 tests
Dominant language
Java
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Description

Custom window merge in WinningBids is expensive (builds a few maps). It would be simpler to use state API there.

Imported from Jira [BEAM-2971](https://issues.apache.org/jira/browse/BEAM-2971). Original Jira may contain additional context.
Reported by: echauchot.

Contributor guide

Open the contributing guide

Research direction

Start by locating WinningBids and reading how its custom window merge builds maps. Compare that flow with the available state API and verify the migration preserves the existing Nexmark behavior while removing the custom merge.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
stream-processing
Issue type
Refactor
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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