diff --git a/mysql-test/r/partition_innodb.result b/mysql-test/r/partition_innodb.result
index c00a75fed90..5deab4d84fc 100644
--- a/mysql-test/r/partition_innodb.result
+++ b/mysql-test/r/partition_innodb.result
@@ -918,3 +918,45 @@ ERROR HY000: CHECK OPTION failed 'test.v'
 SET GLOBAL innodb_stats_persistent= @save_isp;
 DROP view v;
 DROP TABLE t;
+#
+# Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT
+#
+CREATE TABLE t (a VARCHAR(10) NOT NULL,b INT,PRIMARY KEY (b)) ENGINE=INNODB
+PARTITION BY RANGE (b)
+(PARTITION pa VALUES LESS THAN (2),
+PARTITION pb VALUES LESS THAN (20),
+PARTITION pc VALUES LESS THAN (30),
+PARTITION pd VALUES LESS THAN (40));
+INSERT INTO t
+VALUES('A',0),('B',1),('C',2),('D',3),('E',4),('F',5),('G',25),('H',35);
+CREATE TABLE t_copy LIKE t;
+INSERT INTO t_copy SELECT * FROM t;
+ALTER TABLE t ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
+ADD UNIQUE KEY (r,b);
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+ALTER TABLE t_copy ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
+ADD UNIQUE KEY (r,b), ALGORITHM=COPY;
+affected rows: 8
+info: Records: 8  Duplicates: 0  Warnings: 0
+SELECT * FROM t;
+a	b	r
+A	0	1
+B	1	2
+C	2	3
+D	3	4
+E	4	5
+F	5	6
+G	25	7
+H	35	8
+SELECT * FROM t_copy;
+a	b	r
+A	0	1
+B	1	2
+C	2	3
+D	3	4
+E	4	5
+F	5	6
+G	25	7
+H	35	8
+DROP TABLE t,t_copy;
diff --git a/mysql-test/suite/innodb/r/innodb-index.result b/mysql-test/suite/innodb/r/innodb-index.result
index 52344e1e471..64c5586173e 100644
--- a/mysql-test/suite/innodb/r/innodb-index.result
+++ b/mysql-test/suite/innodb/r/innodb-index.result
@@ -1213,3 +1213,30 @@ test.t1	check	status	OK
 DROP TABLE t1;
 SET GLOBAL innodb_file_format=@save_format;
 SET GLOBAL innodb_large_prefix=@save_prefix;
+#
+# Bug#19811005 ALTER TABLE ADD INDEX DOES NOT UPDATE INDEX_LENGTH
+# IN I_S TABLES
+#
+CREATE TABLE t1(a INT, b INT) ENGINE=INNODB, STATS_PERSISTENT=1;
+SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
+cast(INDEX_LENGTH/@@innodb_page_size as int) I
+FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
+D	I
+1	0
+ALTER TABLE t1 ADD INDEX (a);
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
+cast(INDEX_LENGTH/@@innodb_page_size as int) I
+FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
+D	I
+1	1
+ALTER TABLE t1 ADD INDEX (b);
+affected rows: 0
+info: Records: 0  Duplicates: 0  Warnings: 0
+SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
+cast(INDEX_LENGTH/@@innodb_page_size as int) I
+FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
+D	I
+1	2
+DROP TABLE t1;
diff --git a/mysql-test/suite/innodb/t/innodb-index.test b/mysql-test/suite/innodb/t/innodb-index.test
index d28930de815..86ac1a8123e 100644
--- a/mysql-test/suite/innodb/t/innodb-index.test
+++ b/mysql-test/suite/innodb/t/innodb-index.test
@@ -593,3 +593,23 @@ CHECK TABLE t1;
 DROP TABLE t1;
 SET GLOBAL innodb_file_format=@save_format;
 SET GLOBAL innodb_large_prefix=@save_prefix;
+
+--echo #
+--echo # Bug#19811005 ALTER TABLE ADD INDEX DOES NOT UPDATE INDEX_LENGTH
+--echo # IN I_S TABLES
+--echo #
+let $i_s_query=SELECT cast(DATA_LENGTH/@@innodb_page_size as int) D,
+cast(INDEX_LENGTH/@@innodb_page_size as int) I
+FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='test';
+
+CREATE TABLE t1(a INT, b INT) ENGINE=INNODB, STATS_PERSISTENT=1;
+eval $i_s_query;
+--enable_info
+ALTER TABLE t1 ADD INDEX (a);
+--disable_info
+eval $i_s_query;
+--enable_info
+ALTER TABLE t1 ADD INDEX (b);
+--disable_info
+eval $i_s_query;
+DROP TABLE t1;
diff --git a/mysql-test/suite/sys_vars/r/sysvars_innodb,32bit,xtradb.rdiff b/mysql-test/suite/sys_vars/r/sysvars_innodb,32bit,xtradb.rdiff
index 12d48c614f5..794e93a108b 100644
--- a/mysql-test/suite/sys_vars/r/sysvars_innodb,32bit,xtradb.rdiff
+++ b/mysql-test/suite/sys_vars/r/sysvars_innodb,32bit,xtradb.rdiff
@@ -1214,7 +1214,7 @@
  COMMAND_LINE_ARGUMENT	OPTIONAL
  VARIABLE_NAME	INNODB_VERSION
  SESSION_VALUE	NULL
--GLOBAL_VALUE	5.6.43
+-GLOBAL_VALUE	5.6.44
 +GLOBAL_VALUE	5.6.43-84.3
  GLOBAL_VALUE_ORIGIN	COMPILE-TIME
  DEFAULT_VALUE	NULL
diff --git a/mysql-test/suite/sys_vars/r/sysvars_innodb,xtradb.rdiff b/mysql-test/suite/sys_vars/r/sysvars_innodb,xtradb.rdiff
index 77ef05fd5bb..195eda13c52 100644
--- a/mysql-test/suite/sys_vars/r/sysvars_innodb,xtradb.rdiff
+++ b/mysql-test/suite/sys_vars/r/sysvars_innodb,xtradb.rdiff
@@ -684,7 +684,7 @@
  COMMAND_LINE_ARGUMENT	OPTIONAL
  VARIABLE_NAME	INNODB_VERSION
  SESSION_VALUE	NULL
--GLOBAL_VALUE	5.6.43
+-GLOBAL_VALUE	5.6.44
 +GLOBAL_VALUE	5.6.43-84.3
  GLOBAL_VALUE_ORIGIN	COMPILE-TIME
  DEFAULT_VALUE	NULL
diff --git a/mysql-test/suite/sys_vars/r/sysvars_innodb.result b/mysql-test/suite/sys_vars/r/sysvars_innodb.result
index f747a493b79..7d18ab15085 100644
--- a/mysql-test/suite/sys_vars/r/sysvars_innodb.result
+++ b/mysql-test/suite/sys_vars/r/sysvars_innodb.result
@@ -2401,7 +2401,7 @@ READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	INNODB_VERSION
 SESSION_VALUE	NULL
-GLOBAL_VALUE	5.6.43
+GLOBAL_VALUE	5.6.44
 GLOBAL_VALUE_ORIGIN	COMPILE-TIME
 DEFAULT_VALUE	NULL
 VARIABLE_SCOPE	GLOBAL
diff --git a/mysql-test/t/partition_innodb.test b/mysql-test/t/partition_innodb.test
index 54994bc5a66..15c9625770b 100644
--- a/mysql-test/t/partition_innodb.test
+++ b/mysql-test/t/partition_innodb.test
@@ -1028,3 +1028,27 @@ SET GLOBAL innodb_stats_persistent= @save_isp;
 DROP view v;
 DROP TABLE t;
 
+--echo #
+--echo # Bug#28573894 ALTER PARTITIONED TABLE ADD AUTO_INCREMENT DIFF RESULT
+--echo #
+CREATE TABLE t (a VARCHAR(10) NOT NULL,b INT,PRIMARY KEY (b)) ENGINE=INNODB
+PARTITION BY RANGE (b)
+(PARTITION pa VALUES LESS THAN (2),
+ PARTITION pb VALUES LESS THAN (20),
+ PARTITION pc VALUES LESS THAN (30),
+ PARTITION pd VALUES LESS THAN (40));
+
+INSERT INTO t
+VALUES('A',0),('B',1),('C',2),('D',3),('E',4),('F',5),('G',25),('H',35);
+CREATE TABLE t_copy LIKE t;
+INSERT INTO t_copy SELECT * FROM t;
+
+--enable_info
+ALTER TABLE t ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
+ADD UNIQUE KEY (r,b);
+ALTER TABLE t_copy ADD COLUMN r INT UNSIGNED NOT NULL AUTO_INCREMENT,
+ADD UNIQUE KEY (r,b), ALGORITHM=COPY;
+--disable_info
+SELECT * FROM t;
+SELECT * FROM t_copy;
+DROP TABLE t,t_copy;
diff --git a/sql/ha_partition.cc b/sql/ha_partition.cc
index 2167bea8d7c..80bf7ef17fe 100644
--- a/sql/ha_partition.cc
+++ b/sql/ha_partition.cc
@@ -1,6 +1,6 @@
 /*
-  Copyright (c) 2005, 2017, Oracle and/or its affiliates.
-  Copyright (c) 2009, 2017, MariaDB
+  Copyright (c) 2005, 2019, Oracle and/or its affiliates.
+  Copyright (c) 2009, 2019, MariaDB
 
   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
@@ -8329,7 +8329,12 @@ bool ha_partition::inplace_alter_table(TABLE *altered_table,
 
   for (index= 0; index < m_tot_parts && !error; index++)
   {
-    ha_alter_info->handler_ctx= part_inplace_ctx->handler_ctx_array[index];
+    if ((ha_alter_info->handler_ctx=
+	 part_inplace_ctx->handler_ctx_array[index]) != NULL
+	&& index != 0)
+      ha_alter_info->handler_ctx->set_shared_data
+	(*part_inplace_ctx->handler_ctx_array[index - 1]);
+
     if (m_file[index]->ha_inplace_alter_table(altered_table,
                                               ha_alter_info))
       error= true;
diff --git a/sql/handler.h b/sql/handler.h
index af492e75da6..99dfefd4c5a 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -1,8 +1,8 @@
 #ifndef HANDLER_INCLUDED
 #define HANDLER_INCLUDED
 /*
-   Copyright (c) 2000, 2016, Oracle and/or its affiliates.
-   Copyright (c) 2009, 2018, MariaDB
+   Copyright (c) 2000, 2019, Oracle and/or its affiliates.
+   Copyright (c) 2009, 2019, MariaDB
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
@@ -1833,6 +1833,7 @@ public:
   inplace_alter_handler_ctx() {}
 
   virtual ~inplace_alter_handler_ctx() {}
+  virtual void set_shared_data(const inplace_alter_handler_ctx& ctx) {}
 };
 
 
diff --git a/storage/innobase/dict/dict0stats.cc b/storage/innobase/dict/dict0stats.cc
index 364add4791d..06364689173 100644
--- a/storage/innobase/dict/dict0stats.cc
+++ b/storage/innobase/dict/dict0stats.cc
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 2009, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2009, 2019, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2015, 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -2499,7 +2499,6 @@ dict_stats_report_error(
 	return (err);
 }
 
-
 /** Save the table's statistics into the persistent statistics storage.
 @param[in] table_orig	table whose stats to save
 @param[in] only_for_index if this is non-NULL, then stats for indexes
@@ -3208,6 +3207,8 @@ dict_stats_update_for_index(
 		if (dict_stats_persistent_storage_check(false)) {
 			dict_table_stats_lock(index->table, RW_X_LATCH);
 			dict_stats_analyze_index(index);
+			index->table->stat_sum_of_other_index_sizes
+				+= index->stat_index_size;
 			dict_table_stats_unlock(index->table, RW_X_LATCH);
 			dict_stats_save(index->table, &index->id);
 			DBUG_VOID_RETURN;
diff --git a/storage/innobase/handler/handler0alter.cc b/storage/innobase/handler/handler0alter.cc
index 91992058889..0d0982fa498 100644
--- a/storage/innobase/handler/handler0alter.cc
+++ b/storage/innobase/handler/handler0alter.cc
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 2005, 2018, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2005, 2019, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2013, 2019, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -2178,6 +2178,23 @@ struct ha_innobase_inplace_ctx : public inplace_alter_handler_ctx
 	@return whether the table will be rebuilt */
 	bool need_rebuild () const { return(old_table != new_table); }
 
+	/** Share context between partitions.
+	@param[in] ctx	context from another partition of the table */
+	void set_shared_data(const inplace_alter_handler_ctx& ctx)
+	{
+		if (add_autoinc != ULINT_UNDEFINED) {
+			const ha_innobase_inplace_ctx& ha_ctx =
+				static_cast<const ha_innobase_inplace_ctx&>
+				(ctx);
+			/* When adding an AUTO_INCREMENT column to a
+			partitioned InnoDB table, we must share the
+			sequence for all partitions. */
+			ut_ad(ha_ctx.add_autoinc == add_autoinc);
+			ut_ad(ha_ctx.sequence.last());
+			sequence = ha_ctx.sequence;
+		}
+	}
+
 private:
 	// Disable copying
 	ha_innobase_inplace_ctx(const ha_innobase_inplace_ctx&);
@@ -2721,7 +2738,7 @@ prepare_inplace_alter_table_dict(
 		(ha_alter_info->handler_ctx);
 
 	DBUG_ASSERT((ctx->add_autoinc != ULINT_UNDEFINED)
-		    == (ctx->sequence.m_max_value > 0));
+		    == (ctx->sequence.max_value() > 0));
 	DBUG_ASSERT(!ctx->num_to_drop_index == !ctx->drop_index);
 	DBUG_ASSERT(!ctx->num_to_drop_fk == !ctx->drop_fk);
 	DBUG_ASSERT(!add_fts_doc_id || add_fts_doc_id_idx);
diff --git a/storage/innobase/include/handler0alter.h b/storage/innobase/include/handler0alter.h
index 3dd6c99eb6d..63379ad9371 100644
--- a/storage/innobase/include/handler0alter.h
+++ b/storage/innobase/include/handler0alter.h
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2019, 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
@@ -96,9 +97,13 @@ struct ib_sequence_t {
 		return(m_next_value);
 	}
 
-	/** Maximum calumn value if adding an AUTOINC column else 0. Once
-	we reach the end of the sequence it will be set to ~0. */
-	const ulonglong	m_max_value;
+	/** @return maximum column value
+	@retval	0	if not adding AUTO_INCREMENT column */
+	ulonglong max_value() const { return m_max_value; }
+
+private:
+	/** Maximum value if adding an AUTO_INCREMENT column, else 0 */
+	ulonglong	m_max_value;
 
 	/** Value of auto_increment_increment */
 	ulong		m_increment;
diff --git a/storage/innobase/include/univ.i b/storage/innobase/include/univ.i
index 58ff9e1b5e4..e056f0f4bb0 100644
--- a/storage/innobase/include/univ.i
+++ b/storage/innobase/include/univ.i
@@ -45,7 +45,7 @@ Created 1/20/1994 Heikki Tuuri
 
 #define INNODB_VERSION_MAJOR	5
 #define INNODB_VERSION_MINOR	6
-#define INNODB_VERSION_BUGFIX	43
+#define INNODB_VERSION_BUGFIX	44
 
 /* The following is the InnoDB version as shown in
 SELECT plugin_version FROM information_schema.plugins;
diff --git a/storage/xtradb/dict/dict0stats.cc b/storage/xtradb/dict/dict0stats.cc
index c1463e98ce0..06364689173 100644
--- a/storage/xtradb/dict/dict0stats.cc
+++ b/storage/xtradb/dict/dict0stats.cc
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 2009, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2009, 2019, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2015, 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -3207,6 +3207,8 @@ dict_stats_update_for_index(
 		if (dict_stats_persistent_storage_check(false)) {
 			dict_table_stats_lock(index->table, RW_X_LATCH);
 			dict_stats_analyze_index(index);
+			index->table->stat_sum_of_other_index_sizes
+				+= index->stat_index_size;
 			dict_table_stats_unlock(index->table, RW_X_LATCH);
 			dict_stats_save(index->table, &index->id);
 			DBUG_VOID_RETURN;
@@ -4006,7 +4008,6 @@ dict_stats_save_defrag_stats(
 {
 	dberr_t	ret;
 
-
 	if (index->is_readable()) {
 	} else {
 		return (dict_stats_report_error(index->table, true));
diff --git a/storage/xtradb/handler/handler0alter.cc b/storage/xtradb/handler/handler0alter.cc
index afe1bdac2e4..808f8529a77 100644
--- a/storage/xtradb/handler/handler0alter.cc
+++ b/storage/xtradb/handler/handler0alter.cc
@@ -1,6 +1,6 @@
 /*****************************************************************************
 
-Copyright (c) 2005, 2018, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2005, 2019, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2017, 2019, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
@@ -2181,6 +2181,23 @@ struct ha_innobase_inplace_ctx : public inplace_alter_handler_ctx
 	@return whether the table will be rebuilt */
 	bool need_rebuild () const { return(old_table != new_table); }
 
+	/** Share context between partitions.
+	@param[in] ctx	context from another partition of the table */
+	void set_shared_data(const inplace_alter_handler_ctx& ctx)
+	{
+		if (add_autoinc != ULINT_UNDEFINED) {
+			const ha_innobase_inplace_ctx& ha_ctx =
+				static_cast<const ha_innobase_inplace_ctx&>
+				(ctx);
+			/* When adding an AUTO_INCREMENT column to a
+			partitioned InnoDB table, we must share the
+			sequence for all partitions. */
+			ut_ad(ha_ctx.add_autoinc == add_autoinc);
+			ut_ad(ha_ctx.sequence.last());
+			sequence = ha_ctx.sequence;
+		}
+	}
+
 private:
 	// Disable copying
 	ha_innobase_inplace_ctx(const ha_innobase_inplace_ctx&);
@@ -2727,7 +2744,7 @@ prepare_inplace_alter_table_dict(
 		(ha_alter_info->handler_ctx);
 
 	DBUG_ASSERT((ctx->add_autoinc != ULINT_UNDEFINED)
-		    == (ctx->sequence.m_max_value > 0));
+		    == (ctx->sequence.max_value() > 0));
 	DBUG_ASSERT(!ctx->num_to_drop_index == !ctx->drop_index);
 	DBUG_ASSERT(!ctx->num_to_drop_fk == !ctx->drop_fk);
 	DBUG_ASSERT(!add_fts_doc_id || add_fts_doc_id_idx);
diff --git a/storage/xtradb/include/handler0alter.h b/storage/xtradb/include/handler0alter.h
index 3dd6c99eb6d..63379ad9371 100644
--- a/storage/xtradb/include/handler0alter.h
+++ b/storage/xtradb/include/handler0alter.h
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2005, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2019, 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
@@ -96,9 +97,13 @@ struct ib_sequence_t {
 		return(m_next_value);
 	}
 
-	/** Maximum calumn value if adding an AUTOINC column else 0. Once
-	we reach the end of the sequence it will be set to ~0. */
-	const ulonglong	m_max_value;
+	/** @return maximum column value
+	@retval	0	if not adding AUTO_INCREMENT column */
+	ulonglong max_value() const { return m_max_value; }
+
+private:
+	/** Maximum value if adding an AUTO_INCREMENT column, else 0 */
+	ulonglong	m_max_value;
 
 	/** Value of auto_increment_increment */
 	ulong		m_increment;