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Add a fallback pivot strategy when the safe block does not change for a long time #8395

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fab-10
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@fab-10 fab-10 commented Mar 6, 2025

PR description

If the safe block does not change after 7 minutes, then fallback to a previous head block as pivot.
Selecting a previous head block, instead of the last one, to reduce the possibility to be affected by reorgs.

This fallback is especially useful when the chain does not finalize, like it is happing to Holesky

Fixed Issue(s)

fixes #8393

Thanks for sending a pull request! Have you done the following?

  • Checked out our contribution guidelines?
  • Considered documentation and added the doc-change-required label to this PR if updates are required.
  • Considered the changelog and included an update if required.
  • For database changes (e.g. KeyValueSegmentIdentifier) considered compatibility and performed forwards and backwards compatibility tests

Locally, you can run these tests to catch failures early:

  • spotless: ./gradlew spotlessApply
  • unit tests: ./gradlew build
  • acceptance tests: ./gradlew acceptanceTest
  • integration tests: ./gradlew integrationTest
  • reference tests: ./gradlew ethereum:referenceTests:referenceTests

@fab-10 fab-10 force-pushed the pivot-block-from-safe-block-fallback-selection branch 2 times, most recently from 4a01830 to 081ba85 Compare March 6, 2025 18:24
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@matkt matkt left a comment

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LGTM

@fab-10 fab-10 force-pushed the pivot-block-from-safe-block-fallback-selection branch from 081ba85 to e75e22b Compare March 11, 2025 10:18
@fab-10 fab-10 marked this pull request as ready for review March 11, 2025 10:18
@fab-10 fab-10 enabled auto-merge (squash) March 11, 2025 10:18
@fab-10 fab-10 force-pushed the pivot-block-from-safe-block-fallback-selection branch from e75e22b to de7a7f4 Compare March 11, 2025 10:34
@fab-10 fab-10 merged commit 011b52d into hyperledger:main Mar 11, 2025
43 checks passed
@fab-10 fab-10 deleted the pivot-block-from-safe-block-fallback-selection branch March 11, 2025 11:13
marcosio pushed a commit to IoBuilders/besu that referenced this pull request Mar 12, 2025
… a long time (hyperledger#8395)

Signed-off-by: Fabio Di Fabio <[email protected]>
Signed-off-by: Marcos Serradilla Diez <[email protected]>
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