store/tikv: avoid unnecessary pessimistic rollback on ErrKeyExists #23800
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Signed-off-by: Yilin Chen <sticnarf@gmail.com>
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Signed-off-by: Yilin Chen <sticnarf@gmail.com>
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What problem does this PR solve?
This PR fixes #23799 on release-5.0.
What is changed and how it works?
This PR corrects the type matching of
ErrKeyExistsand adds corresponding tests.Check List
Tests
Release note