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build(deps): Update rtCamp/action-slack-notify requirement to c753c78497b021971cf6540efe8c3a131e4b702f#214

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build(deps): Update rtCamp/action-slack-notify requirement to c753c78497b021971cf6540efe8c3a131e4b702f#214
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@dependabot dependabot bot commented on behalf of github Dec 5, 2022

Updates the requirements on rtCamp/action-slack-notify to permit the latest version.

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…497b021971cf6540efe8c3a131e4b702f

Updates the requirements on [rtCamp/action-slack-notify](https://github.com/rtCamp/action-slack-notify) to permit the latest version.
- [Release notes](https://github.com/rtCamp/action-slack-notify/releases)
- [Commits](https://github.com/rtCamp/action-slack-notify/commits/c753c78497b021971cf6540efe8c3a131e4b702f)

---
updated-dependencies:
- dependency-name: rtCamp/action-slack-notify
  dependency-type: direct:production
...

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dependabot bot commented on behalf of github Dec 5, 2022

The following labels could not be found: T:dependencies, S:automerge.

adrianbrink pushed a commit that referenced this pull request May 23, 2023
…ckport tendermint#9760) (#214)

* consensus: correctly save reference to previous height precommits (backport tendermint#9760) (tendermint#9775)

* consensus: correctly save reference to previous height precommits (tendermint#9760)

This change reduces the number of Precommit messages sent to peers by 50%.

During the `ApplyNewRoundStepMessage`, we update the known state of the peer sending us the message.

We set the value of `ps.PRS.Precommits` to nil in this method if the peer is entering a new height or round.
https://github.com/tendermint/tendermint/blob/34ca3fb4741cdb205a4714d345218a0d5e9fefd0/consensus/reactor.go#L1368

We then assign `ps.PRS.LastCommit = ps.PRS.Precommits` if the peer is entering a new height only - this does not happen during just a round change. This therefore results in `ps.PRS.LastCommit` having the value `nil`.

When the `LastCommit` bit field is seen as `nil` in the reactor, an empty bit field is initialized.
https://github.com/tendermint/tendermint/blob/34ca3fb4741cdb205a4714d345218a0d5e9fefd0/consensus/reactor.go#L1273

The code responsible for gossiping votes from the previous height uses this `LastCommit` value and, seeing an empty `LastCommit` will resend every `Precommit` from the previous height since it lost the information it previously had detailing which precommits from the previous height the peer had.

This can be seen in the code responsible for gossiping precommits from the previous height:
https://github.com/tendermint/tendermint/blob/34ca3fb4741cdb205a4714d345218a0d5e9fefd0/consensus/reactor.go#L773

Where this code grabs the, previously `nil`, `LastCommit` bit field:
https://github.com/tendermint/tendermint/blob/34ca3fb4741cdb205a4714d345218a0d5e9fefd0/consensus/reactor.go#L1204-L1212

---

- [ ] Tests written/updated, or no tests needed
- [ ] `CHANGELOG_PENDING.md` updated, or no changelog entry needed
- [ ] Updated relevant documentation (`docs/`) and code comments, or no
      documentation updates needed

(cherry picked from commit da204d3)

* changelog

Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
Co-authored-by: William Banfield <wbanfield@gmail.com>

* Applied changes from 9760

---------

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>
Co-authored-by: William Banfield <wbanfield@gmail.com>
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