planner: add store type to statement summary (#17825)

[ti-srebot]

cherry-pick #17825 to release-4.0

---

What problem does this PR solve?

Issue Number: close #17278

Problem Summary:

What is changed and how it works?

What's Changed:
Add store type to plan in information_schema.statements_summary

How it Works:
Read store type from physical plan, and add to plan field.

Related changes

Check List

Tests

• Manual test

mysql root@localhost:test> select * from t;                                                                                                                                                                                                 
0 rows in set
Time: 0.016s
mysql root@localhost:test>                                                                                                                                                                                                                  
mysql root@localhost:test> select plan from information_schema.statements_summary where digest_text='select * from t'; 
                                                                                                                                                                                                                                            
+------------------------------------------------------------------------------------+
| plan                                                                               |
+------------------------------------------------------------------------------------+
|     TableReader_5    root         10000    data:TableFullScan_4                    |
|     └─TableScan_4    cop[tikv]    10000    table:t, keep order:false, stats:pseudo |
+------------------------------------------------------------------------------------+
1 row in set
Time: 0.014s
mysql root@localhost:test>  

• Unit test

Release note

• Fix inconsistence of Plan between information_schema.statements_summary and explain, which contains tikv/tiflash info.

[ti-srebot]

/run-all-tests

[breezewish]

/run-all-tests

[crazycs520]

LGTM

[djshow832]

NormalizePlanNode is untouched, so different store types result in the same plan digest.
Is that right? @crazycs520

[crazycs520]

NormalizePlanNode is untouched, so different store types result in the same plan digest.
Is that right? @crazycs520

Great catch, I think it is a bug, @pingyu Could you pull another PR to fix it?

[pingyu]

NormalizePlanNode is untouched, so different store types result in the same plan digest.
Is that right? @crazycs520

Great catch, I think it is a bug, @pingyu Could you pull another PR to fix it?

Okay, no problem~

[djshow832]

LGTM

[wjhuang2016]

LGTM

[zz-jason]

/merge

[ti-srebot]

Your auto merge job has been accepted, waiting for:

• 19457
• 19471
• 19362

[ti-srebot]

/run-all-tests

[ti-srebot]

@ti-srebot merge failed.