TiFlash report BadRequest when push timestamp down.

[LittleFall]

Bug Report

1. Minimal reproduce step (Required)

CREATE TABLE t(a timestamp);
alter table t set tiflash replica 1;
insert into t values (current_timestamp());

SELECT /*+ read_from_storage(tiflash[t])*/ count(*) FROM t WHERE a = (SELECT max(a) FROM t);

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

mysql> SELECT /*+ read_from_storage(tikv[t])*/ count(*) FROM t WHERE a = (SELECT max(a) FROM t);
+----------+
| count(*) |
+----------+
|        1 |
+----------+
1 row in set (0.06 sec)

3. What did you see instead (Required)

SELECT /*+ read_from_storage(tiflash[t])*/ count(*) FROM t WHERE a = (SELECT max(a) FROM t);
ERROR 1105 (HY000): [FLASH:Coprocessor:BadRequest] Invalid MySQL Time literal tp: MysqlTime
val: "\031\250\360\214T\000\000\000"
sig: Unspecified
field_type {
  tp: 7
  flag: 129
  flen: 19
  decimal: 0
  collate: 63
  charset: "binary"
}

4. What is your TiDB version? (Required)

mysql> select tidb_version();
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| tidb_version()                                                                                                                                                                                                                                                                                                          |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Release Version: v4.0.0-beta.2-2153-g461cae1
Edition: Community
Git Commit Hash: 461cae15a755c72fb587c97414348832035c4972
Git Branch: HEAD
UTC Build Time: 2021-02-22 02:26:55
GoVersion: go1.13.7
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.01 sec)

[LittleFall]

/severity moderate

[LittleFall]

/sig execution

[LittleFall]

/assign @LittleFall

[LittleFall]

/assign @windtalker

[ti-srebot]

Please edit this comment or add a new comment to complete the following information

Not a bug

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Bug

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1. Root Cause Analysis (RCA) (optional)

2. Symptom (optional)

3. All Trigger Conditions (optional)

4. Workaround (optional)

5. Affected versions

[v4.0.0:v4.0.11]

6. Fixed versions

master