Assertion `inited==NONE' fails upon UPDATE on versioned table with unique blob

CREATE TABLE t1 (a INT, b INT, c TEXT, UNIQUE(c), KEY (b)) ENGINE=MyISAM WITH SYSTEM VERSIONING;

INSERT INTO t1 VALUES (1,10,'foo'),(2,11,'bar');

UPDATE t1 SET a = 3 WHERE b <= 10;

UPDATE t1 SET a = 3 WHERE b <= 10;

# Cleanup

DROP TABLE t1;

#3  <signal handler called>

#4  0x000055c0fa3d6be7 in DsMrr_impl::dsmrr_next (this=0x7faa9007d1e0, range_info=0x7faaa261b708) at /data/src/10.4/sql/multi_range_read.cc:1491

#5  0x000055c0fa5f1a3b in QUICK_RANGE_SELECT::get_next (this=0x7faa9007d870) at /data/src/10.4/sql/opt_range.cc:12254

#6  0x000055c0fa61522e in rr_quick (info=0x7faaa261b8d0) at /data/src/10.4/sql/records.cc:369

#7  0x000055c0fa36261e in READ_RECORD::read_record (this=0x7faaa261b8d0) at /data/src/10.4/sql/records.h:70

#8  mysql_update (thd=thd@entry=0x7faa90000c48, table_list=<optimized out>, fields=..., values=..., conds=<optimized out>, order_num=<optimized out>, order=<optimized out>, limit=18446744073709551614, ignore=false, found_return=0x7faaa261bcb0, updated_return=0x7faaa261bd70) at /data/src/10.4/sql/sql_update.cc:993

#9  0x000055c0fa2a5ac5 in mysql_execute_command (thd=0x7faa90000c48) at /data/src/10.4/sql/sql_parse.cc:4407

#10 0x000055c0fa2ac253 in mysql_parse (thd=0x7faa90000c48, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /data/src/10.4/sql/sql_parse.cc:7958

#11 0x000055c0fa2ae80a in dispatch_command (command=COM_QUERY, thd=0x7faa90000c48, packet=<optimized out>, packet_length=<optimized out>, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /data/src/10.4/sql/sql_class.h:1170

#12 0x000055c0fa2b0a0a in do_command (thd=0x7faa90000c48) at /data/src/10.4/sql/sql_parse.cc:1373

#13 0x000055c0fa3a397e in do_handle_one_connection (connect=connect@entry=0x55c0fd3c85e8) at /data/src/10.4/sql/sql_connect.cc:1412

#14 0x000055c0fa3a3a9f in handle_one_connection (arg=arg@entry=0x55c0fd3c85e8) at /data/src/10.4/sql/sql_connect.cc:1316

#15 0x000055c0fa9c0d06 in pfs_spawn_thread (arg=0x55c0fd322068) at /data/src/10.4/storage/perfschema/pfs.cc:1869

#16 0x00007faaa8b65609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#17 0x00007faaa8754293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

mysqld: /data/src/10.4/sql/handler.h:3203: int handler::ha_index_init(uint, bool): Assertion `inited==NONE' failed.

210104 19:20:07 [ERROR] mysqld got signal 6 ;

#7  0x00007f88fe054f36 in __GI___assert_fail (assertion=0x557a8bdd032e "inited==NONE", file=0x557a8bdd0303 "/data/src/10.4/sql/handler.h", line=3203, function=0x557a8bdd0340 "int handler::ha_index_init(uint, bool)") at assert.c:101

#8  0x0000557a8b03cbc3 in handler::ha_index_init (this=0x7f88e01a5a78, idx=0, sorted=false) at /data/src/10.4/sql/handler.h:3203

#9  0x0000557a8b46e840 in check_duplicate_long_entry_key (table=0x7f88e01a4c10, h=0x7f88e01a5a78, new_rec=0x7f88e012d740 "\360\003", key_no=0) at /data/src/10.4/sql/handler.cc:6594

#10 0x0000557a8b46ef7b in check_duplicate_long_entries (table=0x7f88e01a4c10, h=0x7f88e01a5a78, new_rec=0x7f88e012d740 "\360\003") at /data/src/10.4/sql/handler.cc:6670

#11 0x0000557a8b46f2ca in handler::ha_write_row (this=0x7f88e01a5a78, buf=0x7f88e012d740 "\360\003") at /data/src/10.4/sql/handler.cc:6750

#12 0x0000557a8b0a7518 in vers_insert_history_row (table=0x7f88e01a4c10) at /data/src/10.4/sql/sql_insert.cc:1689

#13 0x0000557a8b2087aa in mysql_update (thd=0x7f88e0000d90, table_list=0x7f88e0013540, fields=..., values=..., conds=0x7f88e00148c8, order_num=0, order=0x0, limit=18446744073709551615, ignore=false, found_return=0x7f88ebffde20, updated_return=0x7f88ebffdee0) at /data/src/10.4/sql/sql_update.cc:1111

#14 0x0000557a8b0f3b00 in mysql_execute_command (thd=0x7f88e0000d90) at /data/src/10.4/sql/sql_parse.cc:4407

#15 0x0000557a8b0ffd19 in mysql_parse (thd=0x7f88e0000d90, rawbuf=0x7f88e0013458 "UPDATE t1 SET a = 3 WHERE b <= 10", length=33, parser_state=0x7f88ebffe550, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7958

#16 0x0000557a8b0ec041 in dispatch_command (command=COM_QUERY, thd=0x7f88e0000d90, packet=0x7f88e00087b1 "UPDATE t1 SET a = 3 WHERE b <= 10", packet_length=33, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1855

#17 0x0000557a8b0ea8a9 in do_command (thd=0x7f88e0000d90) at /data/src/10.4/sql/sql_parse.cc:1373

#18 0x0000557a8b279b93 in do_handle_one_connection (connect=0x557a8d7640f0) at /data/src/10.4/sql/sql_connect.cc:1412

#19 0x0000557a8b2798dc in handle_one_connection (arg=0x557a8d7640f0) at /data/src/10.4/sql/sql_connect.cc:1316

#20 0x0000557a8bc9a768 in pfs_spawn_thread (arg=0x557a8d6b1920) at /data/src/10.4/storage/perfschema/pfs.cc:1869

#21 0x00007f88fe8d5609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#22 0x00007f88fe140293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

commit 0aa02567dd62d96467f84ba96cc67b103f63c9e0

Merge: 04741dc736e fa1aef39ebc

Author: Marko Mäkelä

Date:   Wed Dec 23 14:52:59 2020 +0200

    Merge 10.3 into 10.4

Author: Aleksey Midenkov

Date:   Tue Dec 22 08:34:18 2020 +0300

    MDEV-23446 UPDATE does not insert history row if the row is not changed