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txn: Check lock's TTL when doing cleanup #5471
What have you changed?
This is designed for 3.x version to improve pessimistic lock, and works together with the
A new field
(By the way, the cherry-picks, if the cherry picker works, should not be merged before updating kvproto. I will update it when cherry-picking txn_heart_beat.)
What is the type of the changes?
Pick one of the following and delete the others:
How is the PR tested?
Does this PR affect documentation (docs) or should it be mentioned in the release notes?
Does this PR affect