MDEV-14085 Merge new release of InnoDB MySQL 5.7.20 to 10.2

mysql-test/suite/innodb_fts/r/truncate.result

+#
+# Bug#25053705 - INVALID I/O ON TABLE AFTER TRUNCATE
+#
+CREATE TABLE t1 (a INT, d INT, b VARCHAR(198), c CHAR(158), FULLTEXT fts1(c,b),
+FULLTEXT fts2(c));
+TRUNCATE TABLE t1;
+INSERT INTO t1 (a,d,b,c) VALUES (
+'79795','6',repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorc
+cuullucocraloracurooulrooauuar','1'));
+CREATE TABLE t2 (a INT, d INT, b VARCHAR(198), c CHAR(158), FULLTEXT fts1(c,b));
+INSERT INTO t2 VALUES (1, 1, repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorccuullucocraloracurooulrooauuar','1'));
+create procedure insert_t2(IN total int)
+begin
+declare i int default 1;
+while (i <= total) DO
+insert into t2 select * from t2;
+set i = i + 1;
+end while;
+end|
+CALL insert_t2(15);
+SET @save_dbug = @@SESSION.DEBUG_DBUG;
+SET DEBUG_DBUG = '+d,innodb_invalid_read_after_truncate';
+INSERT INTO t1 (a,d,b,c) VALUES (
+'7795','6',repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorc
+cuullucocraloracurooulrooauuar','1'));
+SET DEBUG_DBUG = @save_dbug;
+DROP PROCEDURE insert_t2;
+DROP TABLE t1,t2;

mysql-test/suite/innodb_fts/t/truncate.opt

+--innodb-random-read-ahead=1

mysql-test/suite/innodb_fts/t/truncate.test

+--source include/have_innodb.inc
+--source include/have_debug.inc
+
+--echo #
+--echo # Bug#25053705 - INVALID I/O ON TABLE AFTER TRUNCATE
+--echo #
+
+CREATE TABLE t1 (a INT, d INT, b VARCHAR(198), c CHAR(158), FULLTEXT fts1(c,b),
+FULLTEXT fts2(c));
+
+TRUNCATE TABLE t1;
+
+INSERT INTO t1 (a,d,b,c) VALUES (
+'79795','6',repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorc
+cuullucocraloracurooulrooauuar','1'));
+
+# The following CREATE TABLE and INSERTs are used to remove the pages related to table t1
+# from the buffer pool.
+CREATE TABLE t2 (a INT, d INT, b VARCHAR(198), c CHAR(158), FULLTEXT fts1(c,b));
+
+INSERT INTO t2 VALUES (1, 1, repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorccuullucocraloracurooulrooauuar','1'));
+
+delimiter |;
+create procedure insert_t2(IN total int)
+begin
+        declare i int default 1;
+        while (i <= total) DO
+                insert into t2 select * from t2;
+                set i = i + 1;
+        end while;
+end|
+delimiter ;|
+
+CALL insert_t2(15);
+
+SET @save_dbug = @@SESSION.DEBUG_DBUG;
+SET DEBUG_DBUG = '+d,innodb_invalid_read_after_truncate';
+
+INSERT INTO t1 (a,d,b,c) VALUES (
+'7795','6',repeat('uololoaroolccaaruolraloouuoocorrcorurlu','1'),
+repeat('orouculcaocuocloooolooloooaorlroclouulrrucclulalouaulrluorooaclllluuorc
+cuullucocraloracurooulrooauuar','1'));
+
+SET DEBUG_DBUG = @save_dbug;
+
+DROP PROCEDURE insert_t2;
+
+DROP TABLE t1,t2;

mysql-test/suite/sys_vars/r/sysvars_innodb.result

@@ -3046,7 +3046,7 @@ READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	INNODB_VERSION
 SESSION_VALUE	NULL
-GLOBAL_VALUE	5.7.19
+GLOBAL_VALUE	5.7.20
 GLOBAL_VALUE_ORIGIN	COMPILE-TIME
 DEFAULT_VALUE	NULL
 VARIABLE_SCOPE	GLOBAL

storage/innobase/buf/buf0rea.cc

@@ -176,6 +176,17 @@ buf_read_page_low(
 		dst = ((buf_block_t*) bpage)->frame;
 	}
 
+	DBUG_EXECUTE_IF(
+		"innodb_invalid_read_after_truncate",
+		if (fil_space_t* space = fil_space_acquire(page_id.space())) {
+			if (!strcmp(space->name, "test/t1")
+			    && page_id.page_no() == space->size - 1) {
+				type = 0;
+				sync = true;
+			}
+			fil_space_release(space);
+		});
+
 	IORequest	request(type | IORequest::READ);
 
 	*err = fil_io(
@@ -321,6 +332,19 @@ buf_read_ahead_random(
 	that is, reside near the start of the LRU list. */
 
 	for (i = low; i < high; i++) {
+		DBUG_EXECUTE_IF(
+			"innodb_invalid_read_after_truncate",
+			if (fil_space_t* space = fil_space_acquire(
+				    page_id.space())) {
+				bool skip = !strcmp(space->name, "test/t1");
+				fil_space_release(space);
+				if (skip) {
+					high = space->size;
+					buf_pool_mutex_exit(buf_pool);
+					goto read_ahead;
+				}
+			});
+
 		const buf_page_t*	bpage = buf_page_hash_get(
 			buf_pool, page_id_t(page_id.space(), i));
 

storage/innobase/include/univ.i

@@ -41,7 +41,7 @@ Created 1/20/1994 Heikki Tuuri
 
 #define INNODB_VERSION_MAJOR	5
 #define INNODB_VERSION_MINOR	7
-#define INNODB_VERSION_BUGFIX	19
+#define INNODB_VERSION_BUGFIX	20
 
 /* The following is the InnoDB version as shown in
 SELECT plugin_version FROM information_schema.plugins;