SPM: the regression issue of capturing baseline failure

[ChenPeng2013]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

use test;
drop table if exists t;
create table t(a int);
select * from t;
select * from t;
admin capture bindings;
show global bindings;

2. What did you expect to see? (Required)

mysql> show global bindings;
+-----------------+---------------------------------------------------------+------------+--------+-------------------------+-------------------------+---------+-----------+---------+
| Original_sql    | Bind_sql                                                | Default_db | Status | Create_time             | Update_time             | Charset | Collation | Source  |
+-----------------+---------------------------------------------------------+------------+--------+-------------------------+-------------------------+---------+-----------+---------+
| select * from t | SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `t` | test       | using  | 2021-01-06 06:14:15.725 | 2021-01-06 06:14:15.725 |         |           | capture |
+-----------------+---------------------------------------------------------+------------+--------+-------------------------+-------------------------+---------+-----------+---------+
1 row in set (0.00 sec)

3. What did you see instead (Required)

mysql> show global bindings;
Empty set (0.00 sec)

4. What is your TiDB version? (Required)

master: v4.0.0-beta.2-1970-g238670269
release-4.0: v4.0.9-24-ge082513b2

[eurekaka]

log level must be set debug to reproduce this problem.

[ti-srebot]

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Bug

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1. Root Cause Analysis (RCA) (optional)

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5. Affected versions

unreleased

6. Fixed versions

master