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json: don't resize slice to get extra zero when the length is unspecified (#51586) #52195

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This is an automated cherry-pick of #51586

What problem does this PR solve?

Issue Number: close #51547

Problem Summary:

What changed and how does it work?

If the flen of a binary string is unspecified, don't resize the target json opaque.

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No need to test
    • I checked and no code files have been changed.

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

@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-release-7.1 This PR is cherry-picked to release-7.1 from a source PR. labels Mar 28, 2024
@ti-chi-bot ti-chi-bot bot added do-not-merge/cherry-pick-not-approved size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/M Denotes a PR that changes 30-99 lines, ignoring generated files. labels Mar 28, 2024
@ti-chi-bot ti-chi-bot added the cherry-pick-approved Cherry pick PR approved by release team. label Apr 12, 2024
@YangKeao
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/retest

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codecov bot commented Apr 15, 2024

Codecov Report

❗ No coverage uploaded for pull request base (release-7.1@1fec74b). Click here to learn what that means.
The diff coverage is 100.0000%.

Additional details and impacted files
@@               Coverage Diff                @@
##             release-7.1     #52195   +/-   ##
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  Coverage               ?   73.4651%           
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  Files                  ?       1211           
  Lines                  ?     379867           
  Branches               ?          0           
================================================
  Hits                   ?     279070           
  Misses                 ?      83002           
  Partials               ?      17795           

@ti-chi-bot ti-chi-bot bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. and removed size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels Apr 15, 2024
@YangKeao YangKeao requested review from YangKeao and xhebox April 15, 2024 09:08
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LGTM

@ti-chi-bot ti-chi-bot bot added needs-1-more-lgtm Indicates a PR needs 1 more LGTM. approved labels Apr 15, 2024
Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
Signed-off-by: YangKeao <yangkeao@chunibyo.icu>
@YangKeao YangKeao force-pushed the cherry-pick-51586-to-release-7.1 branch from 87e92e7 to 7ffaa75 Compare April 15, 2024 09:38
@ti-chi-bot ti-chi-bot bot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Apr 15, 2024
@ti-chi-bot ti-chi-bot bot added the lgtm label Apr 15, 2024
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ti-chi-bot bot commented Apr 15, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: xhebox, YangKeao

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@ti-chi-bot ti-chi-bot bot removed the needs-1-more-lgtm Indicates a PR needs 1 more LGTM. label Apr 15, 2024
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ti-chi-bot bot commented Apr 15, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-04-15 09:08:49.638745556 +0000 UTC m=+242748.749792006: ☑️ agreed by YangKeao.
  • 2024-04-15 09:53:09.963951851 +0000 UTC m=+245409.074998295: ☑️ agreed by xhebox.

@ti-chi-bot ti-chi-bot bot merged commit 53ef4f0 into pingcap:release-7.1 Apr 15, 2024
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3 participants