session: add resource group name in stmt context

[glorv]

What problem does this PR solve?

Issue Number: ref #49318

Problem Summary:

What changed and how does it work?

In the current implementation, in order to support statement level hint /* +RESOURCE_GROUP(name) */ to execute a statement under specific resource group, we change the ResourceGroupName in session ctx during optimization and change back after the statement. This is currently done in the function session.ExecuteStmt(with a defer block). This life time may not be long enough as we have other operations such as query slow-log, query duration metrics, statement summary that depend on statement resource group but is run after session.ExecuteStmt is finished.

So this PR add a new field ResourceGroupName in StmtCtx and the /* Resource_Group() */ hint will change this filed isstead of directly change session context and this value can last until the next statement. The PR changes all statement related operation to use this field.

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

[tiprow]

Hi @glorv. Thanks for your PR.

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[glorv]

/ok-to-test

[codecov]

Codecov Report

Merging #49422 (3c92bc9) into master (161107a) will increase coverage by 0.8268%.
Report is 71 commits behind head on master.
The diff coverage is 76.3157%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #49422        +/-   ##
================================================
+ Coverage   71.0551%   71.8820%   +0.8268%     
================================================
  Files          1368       1423        +55     
  Lines        401291     431329     +30038     
================================================
+ Hits         285138     310048     +24910     
- Misses        96328     102419      +6091     
+ Partials      19825      18862       -963     

Flag	Coverage Δ
integration	45.3374% <76.3157%> (?)
unit	71.0527% <ø> (-0.0024%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	46.9363% <ø> (-5.9573%)	⬇️

[glorv]

/retest

[glorv]

/retest

[nolouch]

lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-12-19 15:31:27.871995357 +0000 UTC m=+974978.909222281: ☑️ agreed by nolouch.
• 2023-12-20 06:23:06.476180107 +0000 UTC m=+1028477.513407031: ☑️ agreed by XuHuaiyu.

[easonn7]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: easonn7, nolouch, tangenta, XuHuaiyu

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Needs approval from an approver in each of these files:

• OWNERS [XuHuaiyu,tangenta]
• pkg/ddl/OWNERS [tangenta]
• pkg/distsql/OWNERS [XuHuaiyu]
• pkg/expression/OWNERS [XuHuaiyu]
• pkg/sessionctx/variable/OWNERS [easonn7]

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[glorv]

/retest

[glorv]

/retest

[glorv]

/retest

[glorv]

/retest

[CabinfeverB]

/test pull-mysql-client-test

[tiprow]

@CabinfeverB: The specified target(s) for /test were not found.
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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #51117.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #52699.