resolved-ts: use min_lock_ts-1 as the candidate of resolved-ts (#17730)#17768
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ti-chi-bot[bot] merged 2 commits intotikv:release-8.5from Nov 5, 2024
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…17730) close tikv#17728 Use min_lock_ts-1 as the candidate of resolved-ts, to ensure resolved_ts < lock.min_commit_ts( <= commit_ts). Signed-off-by: ekexium <eke@fastmail.com> Co-authored-by: ti-chi-bot[bot] <108142056+ti-chi-bot[bot]@users.noreply.github.com> Co-authored-by: you06 <you1474600@gmail.com>
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This is an automated cherry-pick of #17730
What is changed and how it works?
Issue Number: Close #17728
What's Changed:
The problem
By the definition of resolved-ts, we require:
commit_ts > resolved_ts, if the commit happens after the calculation of the resolved-ts.Our implementation uses min_commit_ts to calculate resolved-ts, so that what we have is:
commit_ts >= min_commit_ts >= resolved_tsresolved_tsmay be equal tocommit_ts, which breaks the definition of resolved-ts.The fix
This PR ensures
min_commit_ts > resolved_tsto fix the problemRelated changes
pingcap/docs/pingcap/docs-cn:Check List
Tests
Side effects
Release note