PS-6789 (Merge MySQL 8.0.20): Fixed RocksDB issues

https://jira.percona.com/browse/PS-6789

***
Changed use of 'Field::real_maybe_null()' to 'Field::is_nullable()' due to
changes in the fix for Bug #30460528
"RENAME FIELD::REAL_MAYBE_NULL() TO FIELD::IS_NULLABLE()"
(mysql/mysql-server@c5f8a62).

***
'binary_log::transaction::compression::ZSTD' enum value renamed to
'binary_log::transaction::compression::ALGORITHM_ZSTD' to avoid conflicts with
'RocksDB' that has 'ZSTD' defined as a macro.

***
Restored '+x' file system attribute for the 'mysql-test/mysql-test-run.pl' that
was lost by mistake in one of the previous commits.

***
Re-recorded 'rocksdb.read_only_tx' MTR test case because of the changes in
the implementation of WL percona#3549 "Binlog: compression"
(https://dev.mysql.com/worklog/task/?id=3549)
(commit mysql/mysql-server@1e5ae34)
that caused increasing 'Format_description_event' binlog event size and
therefore some pre-recorded binary log positions in the '.result' files.

***
Re-recorded 'rocksdb.type_enum_indexes' MTR test case due to new
'EXPLAIN SELECT' results introduced in the implementation of
WL #13538 "Add index hints based on new hint infrastructure"
(https://dev.mysql.com/worklog/task/?id=13538)
(commit mysql/mysql-server@3f8e507)

***
Re-recorded 'rocksdb.index_merge_rocksdb2' MTR test case because of the
changed execution plan (more hash joins instead of nested block loops)
introduced in these improvements Bug #30528604
"DELETE THE PRE-ITERATOR EXECUTOR"
(commit mysql/mysql-server@ef166f8),
Bug #30473261
"CONVERT THE INDEX SUBQUERY ENGINES INTO USING THE ITERATOR EXECUTOR"
(commit mysql/mysql-server@cb4116e)
(commit mysql/mysql-server@629b549)
(commit mysql/mysql-server@5a41fba)
(commit mysql/mysql-server@31bd903)
(commit mysql/mysql-server@75bbe1b)
(commit mysql/mysql-server@6226c1a)
(commit mysql/mysql-server@0b45e96)
(commit mysql/mysql-server@8e45d7e)
(commit mysql/mysql-server@7493ae4)
(commit mysql/mysql-server@a5f60bf)
(commit mysql/mysql-server@609b86e),
Bug #30912972
"ASSERTION `KEYLEN == M_START_KEY.LENGTH' FAILED"
(commit mysql/mysql-server@b28bea5).

***
Re-recorded 'rocksdb.rocksdb' and 'rocksdb.insert_with_keys' MTR test cases
because of the new deprecation warning introduced in the implementation of
WL #13325 "Deprecate VALUES syntax in INSERT ... ON DUPLICATE KEY UPDATE"
(https://dev.mysql.com/worklog/task/?id=13325)
(commit mysql/mysql-server@6f3b9df)

***
Re-recorded 'rocksdb_rppl.rpl_rocksdb_stm_mixed_crash_safe' and
'rocksdb_rpl.rpl_rocksdb_row_crash_safe' MTR test cases due to new column
'Require_table_primary_key_check' appearing in
'SHOW CREATE TABLE mysql.slave_relay_log_info' introduced in the
implementation of WL #13239 "Enable/disable primary key checks on slaves"
(https://dev.mysql.com/worklog/task/?id=13239)
(commit mysql/mysql-server@e51bdc3).

***
Re-recorded 'rocksdb_rpl.rpl_rocksdb_stm_mixed_crash_safe' and
'rocksdb_rpl.rpl_rocksdb_row_crash_safe' MTR test cases because of the
changes in the 'mysql-test/extra/rpl_tests/rpl_mixing_engines.inc'
include file introduced in the implementation of WL percona#3549
"Binlog: compression"
(https://dev.mysql.com/worklog/task/?id=3549)
(commit mysql/mysql-server@1e5ae34).

mysql-test/suite/rocksdb/r/index_merge_rocksdb2.result

@@ -388,7 +388,7 @@ explain select * from t0,t1 where t0.key1 = 5 and
 (t1.key1 = t0.key1 or t1.key8 = t0.key1);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	SIMPLE	t0	NULL	ref	i1	i1	4	const	2	100.00	NULL
-1	SIMPLE	t1	NULL	index_merge	i1,i8	i1,i8	4,4	NULL	4	100.00	Using union(i1,i8); Using where; Using join buffer (Block Nested Loop)
+1	SIMPLE	t1	NULL	index_merge	i1,i8	i1,i8	4,4	NULL	4	100.00	Using union(i1,i8); Using where; Using join buffer (hash join)
 Warnings:
 Note	1003	/* select#1 */ select `test`.`t0`.`key1` AS `key1`,`test`.`t0`.`key2` AS `key2`,`test`.`t0`.`key3` AS `key3`,`test`.`t0`.`key4` AS `key4`,`test`.`t0`.`key5` AS `key5`,`test`.`t0`.`key6` AS `key6`,`test`.`t0`.`key7` AS `key7`,`test`.`t0`.`key8` AS `key8`,`test`.`t1`.`key1` AS `key1`,`test`.`t1`.`key2` AS `key2`,`test`.`t1`.`key3` AS `key3`,`test`.`t1`.`key4` AS `key4`,`test`.`t1`.`key5` AS `key5`,`test`.`t1`.`key6` AS `key6`,`test`.`t1`.`key7` AS `key7`,`test`.`t1`.`key8` AS `key8` from `test`.`t0` join `test`.`t1` where ((`test`.`t0`.`key1` = 5) and ((`test`.`t1`.`key1` = 5) or (`test`.`t1`.`key8` = 5)))
 # Fix for bug#1974
@@ -489,7 +489,7 @@ where (a.key1 < 500000 or a.key2 < 3)
 and   (b.key1 < 500000 or b.key2 < 3);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	SIMPLE	a	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	100.00	Using sort_union(i1,i2); Using where
-1	SIMPLE	b	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	100.00	Using sort_union(i1,i2); Using where; Using join buffer (Block Nested Loop)
+1	SIMPLE	b	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	100.00	Using sort_union(i1,i2); Using where; Using join buffer (hash join)
 Warnings:
 Note	1003	/* select#1 */ select max((((((((((`test`.`a`.`key1` + `test`.`b`.`key1`) + `test`.`a`.`key2`) + `test`.`b`.`key2`) + `test`.`a`.`key3`) + `test`.`b`.`key3`) + `test`.`a`.`key4`) + `test`.`b`.`key4`) + `test`.`a`.`key5`) + `test`.`b`.`key5`)) AS `max(a.key1 + b.key1 + a.key2 + b.key2 + a.key3 + b.key3 + a.key4 + b.key4 + a.key5 + b.key5)` from `test`.`t0` `a` FORCE INDEX (`i2`) FORCE INDEX (`i1`) join `test`.`t0` `b` FORCE INDEX (`i2`) FORCE INDEX (`i1`) where (((`test`.`a`.`key1` < 500000) or (`test`.`a`.`key2` < 3)) and ((`test`.`b`.`key1` < 500000) or (`test`.`b`.`key2` < 3)))
 select max(a.key1 + b.key1 + a.key2 + b.key2 + a.key3 + b.key3 + a.key4 + b.key4 + a.key5 + b.key5)
@@ -505,7 +505,7 @@ where (a.key1 = 1 or a.key2 = 1)
 and   (b.key1 = 1 or b.key2 = 1);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
 1	SIMPLE	a	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	#	Using union(i1,i2); Using where
-1	SIMPLE	b	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	#	Using union(i1,i2); Using where; Using join buffer (Block Nested Loop)
+1	SIMPLE	b	NULL	index_merge	i1,i2	i1,i2	4,4	NULL	#	#	Using union(i1,i2); Using where; Using join buffer (hash join)
 Warnings:
 Note	1003	/* select#1 */ select max((((((((((`test`.`a`.`key1` + `test`.`b`.`key1`) + `test`.`a`.`key2`) + `test`.`b`.`key2`) + `test`.`a`.`key3`) + `test`.`b`.`key3`) + `test`.`a`.`key4`) + `test`.`b`.`key4`) + `test`.`a`.`key5`) + `test`.`b`.`key5`)) AS `max(a.key1 + b.key1 + a.key2 + b.key2 + a.key3 + b.key3 + a.key4 + b.key4 + a.key5 + b.key5)` from `test`.`t0` `a` FORCE INDEX (`i2`) FORCE INDEX (`i1`) join `test`.`t0` `b` FORCE INDEX (`i2`) FORCE INDEX (`i1`) where (((`test`.`a`.`key1` = 1) or (`test`.`a`.`key2` = 1)) and ((`test`.`b`.`key1` = 1) or (`test`.`b`.`key2` = 1)))
 select max(a.key1 + b.key1 + a.key2 + b.key2 + a.key3 + b.key3 + a.key4 + b.key4 + a.key5 + b.key5)

mysql-test/suite/rocksdb/r/insert_with_keys.result

@@ -83,6 +83,8 @@ INSERT IGNORE INTO t1 (a,b) VALUES (1,'a'),(12345,'z');
 Warnings:
 Warning	1062	Duplicate entry '1-a' for key 't1.a'
 INSERT INTO t1 (a,b) VALUES (1,'a'),(12345,'z') ON DUPLICATE KEY UPDATE a = a+VALUES(a);
+Warnings:
+Warning	1287	'VALUES function' is deprecated and will be removed in a future release. Please use an alias (INSERT INTO ... VALUES (...) AS alias) and replace VALUES(col) in the ON DUPLICATE KEY UPDATE clause with alias.col instead
 SELECT a,b FROM t1;
 a	b
 100	a

mysql-test/suite/rocksdb/r/read_only_tx.result

@@ -8,7 +8,7 @@ Variable_name	Value
 Binlog_snapshot_file	binlog.000001
 SHOW STATUS LIKE 'binlog_snapshot_position';
 Variable_name	Value
-Binlog_snapshot_position	672
+Binlog_snapshot_position	673
 select case when variable_value-@p < 1000 then 'true' else variable_value-@p end from performance_schema.global_status where variable_name='rocksdb_number_sst_entry_put';
 case when variable_value-@p < 1000 then 'true' else variable_value-@p end
 true

mysql-test/suite/rocksdb/r/rocksdb.result

@@ -1991,7 +1991,11 @@ blob_col text,
 PRIMARY KEY (id)
 ) ENGINE=ROCKSDB CHARSET=latin1;
 INSERT INTO t1 SET id=123, blob_col=repeat('z',64000) ON DUPLICATE KEY UPDATE blob_col=VALUES(blob_col);
+Warnings:
+Warning	1287	'VALUES function' is deprecated and will be removed in a future release. Please use an alias (INSERT INTO ... VALUES (...) AS alias) and replace VALUES(col) in the ON DUPLICATE KEY UPDATE clause with alias.col instead
 INSERT INTO t1 SET id=123, blob_col=''                ON DUPLICATE KEY UPDATE blob_col=VALUES(blob_col);
+Warnings:
+Warning	1287	'VALUES function' is deprecated and will be removed in a future release. Please use an alias (INSERT INTO ... VALUES (...) AS alias) and replace VALUES(col) in the ON DUPLICATE KEY UPDATE clause with alias.col instead
 DROP TABLE t1;
 #
 # Issue #17: Automatic per-index column families

mysql-test/suite/rocksdb/r/type_enum_indexes.result

@@ -63,7 +63,7 @@ test3
 test4
 EXPLAIN SELECT DISTINCT b FROM t1 IGNORE INDEX (b);
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
-1	SIMPLE	t1	NULL	ALL	b	NULL	NULL	NULL	#	100.00	Using temporary
+1	SIMPLE	t1	NULL	ALL	NULL	NULL	NULL	NULL	#	100.00	Using temporary
 Warnings:
 Note	1003	/* select#1 */ select distinct `test`.`t1`.`b` AS `b` from `test`.`t1` IGNORE INDEX (`b`)
 SELECT DISTINCT b FROM t1 IGNORE INDEX (b);