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executor: revert #25730 to fix #28011 (#42488) #42500

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This is an automated cherry-pick of #42488

What problem does this PR solve?

Issue Number: close #28011

Problem Summary: as described in #28011 , kv pairs converted from locks is visible to union-scan, which leads to duplicated rows (one from snapshot and the other from mem-index-reader).

What is changed and how it works?

Since tikv/tikv#13694 has introduced a better solution to the problem of accumulated locks, thus we can simply revert #25730 .

Here is the benchmark result. It shows that there is a slight regression in point-get workload.

2023-03-22_223208
2023-03-22_223259

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
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@ti-chi-bot ti-chi-bot added do-not-merge/cherry-pick-not-approved release-note-none Denotes a PR that doesn't merit a release note. labels Mar 23, 2023
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@ti-chi-bot: This cherry pick PR is for a release branch and has not yet been approved by release team.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick, it must first be approved by the collaborators.

AFTER it has been approved by collaborators, please ping the release team in a comment to request a cherry pick review.

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@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-5.3 labels Mar 23, 2023
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zyguan commented Mar 23, 2023

tikv/tikv#13694 is unavailable in this release.

@zyguan zyguan closed this Mar 23, 2023
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