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executor: revert #25730 to fix #28011 (#42488) #42503

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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 commented Mar 23, 2023

[REVIEW NOTIFICATION]

This pull request has been approved by:

  • cfzjywxk
  • ekexium

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
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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. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-6.5 This PR is cherry-picked to release-6.5 from a source PR. labels Mar 23, 2023
Signed-off-by: zyguan <zhongyangguan@gmail.com>
@ti-chi-bot ti-chi-bot added the status/LGT1 Indicates that a PR has LGTM 1. label Mar 29, 2023
@ti-chi-bot ti-chi-bot added status/LGT2 Indicates that a PR has LGTM 2. and removed status/LGT1 Indicates that a PR has LGTM 1. labels Mar 29, 2023
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/merge

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This pull request has been accepted and is ready to merge.

Commit hash: d2a220d

@ti-chi-bot ti-chi-bot added the status/can-merge Indicates a PR has been approved by a committer. label Mar 29, 2023
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zyguan commented Mar 29, 2023

/retest

@VelocityLight VelocityLight added cherry-pick-approved Cherry pick PR approved by release team. and removed do-not-merge/cherry-pick-not-approved labels Apr 3, 2023
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cfzjywxk commented Apr 3, 2023

/retest

@ti-chi-bot ti-chi-bot merged commit 6211ae6 into pingcap:release-6.5 Apr 3, 2023
@VelocityLight VelocityLight added do-not-merge/cherry-pick-not-approved cherry-pick-approved Cherry pick PR approved by release team. and removed cherry-pick-approved Cherry pick PR approved by release team. do-not-merge/cherry-pick-not-approved labels Apr 21, 2023
you06 added a commit to you06/tidb that referenced this pull request May 19, 2023
you06 added a commit to you06/tidb that referenced this pull request May 19, 2023
ti-chi-bot bot pushed a commit that referenced this pull request May 19, 2023
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5 participants