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json: don't resize slice to get extra zero when the length is unspecified (#51586) #52194

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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

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
@ti-chi-bot ti-chi-bot added release-note-none size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-release-6.5 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
Signed-off-by: Yang Keao <yangkeao@chunibyo.icu>
@ti-chi-bot ti-chi-bot bot added size/S Denotes a PR that changes 10-29 lines, ignoring generated files. and removed size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels Mar 28, 2024
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codecov bot commented Mar 28, 2024

Codecov Report

❗ No coverage uploaded for pull request base (release-6.5@1577799). Click here to learn what that means.
The diff coverage is 100.0000%.

Additional details and impacted files
@@               Coverage Diff                @@
##             release-6.5     #52194   +/-   ##
================================================
  Coverage               ?   73.6765%           
================================================
  Files                  ?       1095           
  Lines                  ?     350980           
  Branches               ?          0           
================================================
  Hits                   ?     258590           
  Misses                 ?      75797           
  Partials               ?      16593           

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LGTM

@ti-chi-bot ti-chi-bot bot added the approved label Mar 28, 2024
@ti-chi-bot ti-chi-bot added the cherry-pick-approved Cherry pick PR approved by release team. label Mar 28, 2024
@ti-chi-bot ti-chi-bot bot added the lgtm label Mar 28, 2024
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ti-chi-bot bot commented Mar 28, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, YangKeao

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  • OWNERS [Defined2014,YangKeao]

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ti-chi-bot bot commented Mar 28, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-03-28 08:48:33.142120312 +0000 UTC m=+2144140.164366700: ☑️ agreed by YangKeao.
  • 2024-03-28 08:54:53.089690534 +0000 UTC m=+2144520.111936921: ☑️ agreed by Defined2014.

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/retest

@ti-chi-bot ti-chi-bot bot merged commit 087d8c8 into pingcap:release-6.5 Mar 28, 2024
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3 participants