admin recover index report error with real TiKV

[Defined2014]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

CREATE TABLE `t` (
  `a` int(11) NOT NULL,
  `b` char(10) NOT NULL,
  PRIMARY KEY (`a`,`b`) /*T![clustered_index] CLUSTERED */,
  KEY `a` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
insert into t values (1, '啊  ');
admin recover index t a;

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

run without error

3. What did you see instead (Required)

mysql> admin recover index t a;
ERROR 1105 (HY000): [components/tidb_query_executors/src/table_scan_executor.rs:425]: Data is corrupted, missing data for NOT NULL column (offset = 0)

4. What is your TiDB version? (Required)

[aytrack]

/severity major