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planner: quick fix the panic issue when restoring hints from a plan (#48640) #48642

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This is an automated cherry-pick of #48640

What problem does this PR solve?

Issue Number: ref #46791

Problem Summary: planner: quick fix the panic issue when restoring hints from a plan

What is changed and how it works?

Forget to check whether the pointer is nil before using it:

image

But this pointer shouldn't be nil anyway, the root cause still needs more investigation, this is just a quick fix for users.

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 ok-to-test Indicates a PR is ready to be tested. release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/S Denotes a PR that changes 10-29 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 Nov 16, 2023
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codecov bot commented Nov 16, 2023

Codecov Report

❗ No coverage uploaded for pull request base (release-7.1@5b56cd5). Click here to learn what that means.
The diff coverage is n/a.

Additional details and impacted files
@@               Coverage Diff                @@
##             release-7.1     #48642   +/-   ##
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  Coverage               ?   73.7879%           
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  Files                  ?       1206           
  Lines                  ?     380519           
  Branches               ?          0           
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  Hits                   ?     280777           
  Misses                 ?      82027           
  Partials               ?      17715           

@ti-chi-bot ti-chi-bot added the cherry-pick-approved Cherry pick PR approved by release team. label Nov 27, 2023
@ti-chi-bot ti-chi-bot bot added needs-1-more-lgtm Indicates a PR needs 1 more LGTM. approved labels Dec 1, 2023
@ti-chi-bot ti-chi-bot bot added lgtm and removed needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Dec 4, 2023
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ti-chi-bot bot commented Dec 4, 2023

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, time-and-fate

The full list of commands accepted by this bot can be found here.

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  • OWNERS [AilinKid,time-and-fate]

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ti-chi-bot bot commented Dec 4, 2023

[LGTM Timeline notifier]

Timeline:

  • 2023-12-01 14:04:55.760482235 +0000 UTC m=+1190724.425708441: ☑️ agreed by time-and-fate.
  • 2023-12-04 09:37:59.05129015 +0000 UTC m=+1433907.716516342: ☑️ agreed by AilinKid.

@ti-chi-bot ti-chi-bot bot merged commit 92cd5c1 into pingcap:release-7.1 Dec 4, 2023
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approved cherry-pick-approved Cherry pick PR approved by release team. lgtm ok-to-test Indicates a PR is ready to be tested. release-note-none Denotes a PR that doesn't merit a release note. sig/planner SIG: Planner size/S Denotes a PR that changes 10-29 lines, ignoring generated files. type/cherry-pick-for-release-7.1 This PR is cherry-picked to release-7.1 from a source PR.
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4 participants