Merge 10.1 into 10.2

mysql-test/include/binlog_parallel_replication_marks.test

@@ -7,10 +7,6 @@
 RESET MASTER;
 --source include/wait_for_binlog_checkpoint.inc
 
-set time_zone="+02:00";
---let $stable_stamp= `SELECT UNIX_TIMESTAMP("2020-01-21 15:32:22")`
-eval set timestamp=$stable_stamp;
-
 CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 --let $binlog_pos1=query_get_value(SHOW MASTER STATUS, Position, 1)
 /* GTID */ INSERT INTO t1 VALUES (1,0);
@@ -42,7 +38,6 @@ CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 /* GTID */ INSERT INTO t1 VALUES (9, 5, 1);
 /* GTID */ COMMIT;
 connect (tmp_con,localhost,root,,);
-eval set timestamp=$stable_stamp;
 /* GTID */ INSERT INTO t1 VALUES (10, 6, 0);
 /* GTID */ BEGIN;
 /* GTID */ CREATE TEMPORARY TABLE t5 (a INT PRIMARY KEY) ENGINE=InnoDB;
@@ -72,7 +67,7 @@ my $file= $ENV{'OUTPUT_FILE'};
 open F, "<", $file
   or die "Unable to open file '$file': $!\n";
 while (<F>) {
-  s/^#\d+ \d+:\d+:\d+ /# /;
+  s/^#\d+ +\d+:\d+:\d+ /# /;
   s/GTID \d+-\d+-\d+/GTID #-#-#/;
   s/end_log_pos \d+/end_log_pos #/;
   s/table id \d+/table id #/;

mysql-test/suite/binlog/r/binlog_parallel_replication_marks_row.result

@@ -1,6 +1,4 @@
 RESET MASTER;
-set time_zone="+02:00";
-set timestamp=1579613542;
 CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 /* GTID */ INSERT INTO t1 VALUES (1,0);
 /* GTID */ BEGIN;
@@ -31,7 +29,6 @@ CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 /* GTID */ INSERT INTO t1 VALUES (9, 5, 1);
 /* GTID */ COMMIT;
 connect  tmp_con,localhost,root,,;
-set timestamp=1579613542;
 /* GTID */ INSERT INTO t1 VALUES (10, 6, 0);
 /* GTID */ BEGIN;
 /* GTID */ CREATE TEMPORARY TABLE t5 (a INT PRIMARY KEY) ENGINE=InnoDB;

mysql-test/suite/binlog/r/binlog_parallel_replication_marks_stm_mix.result

@@ -1,6 +1,4 @@
 RESET MASTER;
-set time_zone="+02:00";
-set timestamp=1579613542;
 CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 /* GTID */ INSERT INTO t1 VALUES (1,0);
 /* GTID */ BEGIN;
@@ -31,7 +29,6 @@ CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB;
 /* GTID */ INSERT INTO t1 VALUES (9, 5, 1);
 /* GTID */ COMMIT;
 connect  tmp_con,localhost,root,,;
-set timestamp=1579613542;
 /* GTID */ INSERT INTO t1 VALUES (10, 6, 0);
 /* GTID */ BEGIN;
 /* GTID */ CREATE TEMPORARY TABLE t5 (a INT PRIMARY KEY) ENGINE=InnoDB;

mysql-test/suite/sys_vars/r/sysvars_innodb,32bit,xtradb.rdiff-disabled

@@ -705,7 +705,7 @@
 +COMMAND_LINE_ARGUMENT	REQUIRED
 +VARIABLE_NAME	INNODB_LOG_COMPRESSED_PAGES
  SESSION_VALUE	NULL
- GLOBAL_VALUE	OFF
+ GLOBAL_VALUE	ON
  GLOBAL_VALUE_ORIGIN	COMPILE-TIME
 @@ -1397,7 +1677,7 @@
  GLOBAL_VALUE_ORIGIN	CONFIG

mysql-test/suite/sys_vars/r/sysvars_innodb,xtradb.rdiff-disabled

@@ -379,7 +379,7 @@
 +COMMAND_LINE_ARGUMENT	REQUIRED
  VARIABLE_NAME	INNODB_LOG_COMPRESSED_PAGES
  SESSION_VALUE	NULL
- GLOBAL_VALUE	OFF
+ GLOBAL_VALUE	ON
 @@ -1447,6 +1727,34 @@
  ENUM_VALUE_LIST	NULL
  READ_ONLY	NO

sql/sql_explain.cc

@@ -350,10 +350,13 @@ int print_explain_row(select_result_sink *result,
   item_list.push_back(new (mem_root) Item_string_sys(thd, jtype_str),
                       mem_root);
   
-  /* 'possible_keys' */
+  /* 'possible_keys'
+     The buffer must not be deallocated before we call send_data, otherwise
+     we may end up reading freed memory.
+  */
+  StringBuffer<64> possible_keys_buf;
   if (possible_keys && !possible_keys->is_empty())
   {
-    StringBuffer<64> possible_keys_buf;
     push_string_list(thd, &item_list, *possible_keys, &possible_keys_buf);
   }
   else

storage/innobase/page/page0zip.cc

@@ -66,12 +66,12 @@ page_zip_stat_t		page_zip_stat[PAGE_ZIP_SSIZE_MAX];
 /** Statistics on compression, indexed by index->id */
 page_zip_stat_per_index_t	page_zip_stat_per_index;
 
-/* Compression level to be used by zlib. Settable by user. */
-uint	page_zip_level = DEFAULT_COMPRESSION_LEVEL;
+/** Compression level to be used by zlib. Settable by user. */
+uint	page_zip_level;
 
-/* Whether or not to log compressed page images to avoid possible
+/** Whether or not to log compressed page images to avoid possible
 compression algorithm changes in zlib. */
-my_bool	page_zip_log_pages = true;
+my_bool	page_zip_log_pages;
 
 /* Please refer to ../include/page0zip.ic for a description of the
 compressed page format. */

storage/xtradb/page/page0zip.cc

@@ -2,7 +2,7 @@
 
 Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2012, Facebook Inc.
-Copyright (c) 2014, SkySQL Ab. All Rights Reserved.
+Copyright (c) 2014, 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -83,12 +83,12 @@ UNIV_INTERN mysql_pfs_key_t		page_zip_stat_per_index_mutex_key;
 #endif /* !UNIV_INNOCHECKSUM */
 #endif /* !UNIV_HOTBACKUP */
 
-/* Compression level to be used by zlib. Settable by user. */
-UNIV_INTERN uint	page_zip_level = DEFAULT_COMPRESSION_LEVEL;
+/** Compression level to be used by zlib. Settable by user. */
+UNIV_INTERN uint	page_zip_level;
 
-/* Whether or not to log compressed page images to avoid possible
+/** Whether or not to log compressed page images to avoid possible
 compression algorithm changes in zlib. */
-UNIV_INTERN my_bool	page_zip_log_pages = false;
+UNIV_INTERN my_bool	page_zip_log_pages;
 
 /* Please refer to ../include/page0zip.ic for a description of the
 compressed page format. */