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[WIP] Another round of fixing flaky tests - #17361

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[WIP] Another round of fixing flaky tests#17361
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test/flaky-tests-2

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@syjn99 syjn99 commented Aug 14, 2026

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What type of PR is this?

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Bug fix
Feature
Documentation
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What does this PR do? Why is it needed?

Which issue(s) does this PR fix?

Fixes #

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Acknowledgements

  • I have read CONTRIBUTING.md.
  • I have included a uniquely named changelog fragment file.
  • I have added a description with sufficient context for reviewers to understand this PR.
  • I have tested that my changes work as expected and I added a testing plan to the PR description (if applicable).

…lColumnExchange`

Make this test deterministic even in a single CPU.

Pubsub attaches already-connected peers at startup, while
it is triggered by identify event which can be delivered unreliably
in our "blank host" setting (`UseBlankHost: true`).

Currently go test always fails with:
```
go test ./beacon-chain/p2p/partialdatacolumnbroadcaster/integrationtest/ \
  -run TestTwoNodePartialColumnExchange -count=200 -cpu 1
```
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