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Ran 10 Jun 2025 08:47AM UTC

Files 193

Run time 19s

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Committed 10 Jun 2025 08:22AM UTC coverage: 91.019% (+0.7%) from 90.365%

Job # 15554805464.1

Build Type

push

github

Committed by

drmingdrmer

Commit Message

refactor: tolerate leader state reversion upon restart

When a leader restarted and its log reverted, and tried to re-elect
itself as leader:

And when vote request is rejected and see a greater vote,
it should only update to the non-committed version of the responded vote
to its local state:

This prevents a dangerous scenario when state reversion is allowed:
1. A node was a leader but its state reverted to a previous version;
2. The node restarts and begins election;
3. It receives a vote response containing its own previous leader vote;
4. Without this protection, it would update to that committed vote and
   become leader again;
5. However, it lacks the necessary logs, causing committed entries to be
   lost or inconsistent;

By using the non-committed version, we prevent this reverted node from
becoming leader while still allowing proper vote updates for legitimate
cases.

Run Details

11168 of 12270 relevant lines covered (91.02%)

88409.33 hits per line

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main: 88%

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