*: support resource_group sql hint

[BornChanger]

What problem does this PR solve?

Issue Number: close #41676

Problem Summary:

What is changed and how it works?

Via this pr, resource control can support resource _group hint, here is an example

select /*+ resource_group(rg1) */ * from t1;

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)

mysql> select * from information_schema.resource_groups;
+---------+------------+-----------+
| NAME    | RU_PER_SEC | BURSTABLE |
+---------+------------+-----------+
| default |   10000000 | YES       |
| rg1     |      10000 | NO        |
+---------+------------+-----------+
2 rows in set (0.00 sec)

mysql> select /*+ resource_group(rg1) */ * from t1;
Empty set (0.01 sec)

mysql> select /*+ resource_group(rg2) */ * from t1;
ERROR 1105 (HY000): [resource group] resourceGroupName rg2 is not existed.

mysql> insert /*+ resource_group(rg2) */ into t1 values(1);
ERROR 1105 (HY000): [resource group] resourceGroupName rg2 is not existed.

mysql> delete /*+ resource_group(rg3) */ from t1;
ERROR 1105 (HY000): [resource group] resourceGroupName rg3 is not existed.

• 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

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• glorv
• tiancaiamao

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[BornChanger]

/cc @nolouch @tiancaiamao @glorv

[glorv]

LGTM

[BornChanger]

/retest

[nolouch]

How about :

if originStmtHints.HasResourceGroup {
       if variable.EnableResourceControl.Load() {
       }
       ...
}

I think more readable and can reduce once if judged for normal situations.

[BornChanger]

fixed

[BornChanger]

/retest

[BornChanger]

/retest

[glorv]

/merge

[ti-chi-bot]

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

Commit hash: be210d8