diff --git a/README.md b/README.md
index 2b027779441..dc7362a5124 100644
--- a/README.md
+++ b/README.md
@@ -24,14 +24,14 @@ working MySQL or MariaDB with Tokutek patches, and with the TokuDB storage
 engine, called `make.mysql.bash`.  This script will download copies of the
 needed source code from github and build everything.
 
-To build MySQL 5.5.39 with TokuDB 7.5.0:
+To build MySQL 5.5.39 with TokuDB 7.5.2:
 ```sh
-scripts/make.mysql.bash --mysqlbuild=mysql-5.5.39-tokudb-7.5.0-linux-x86_64
+scripts/make.mysql.bash --mysqlbuild=mysql-5.5.39-tokudb-7.5.2-linux-x86_64
 ```
 
-To build MariaDB 5.5.39 with TokuDB 7.5.0:
+To build MariaDB 5.5.39 with TokuDB 7.5.2:
 ```sh
-scripts/make.mysql.bash --mysqlbuild=mariadb-5.5.39-tokudb-7.5.0-linux-x86_64
+scripts/make.mysql.bash --mysqlbuild=mariadb-5.5.39-tokudb-7.5.2-linux-x86_64
 ```
 
 Before you start, make sure you have a C++11-compatible compiler (GCC >=
diff --git a/mysql-test/suite/tokudb.bugs/r/db743.result b/mysql-test/suite/tokudb.bugs/r/db743.result
new file mode 100644
index 00000000000..2b2fc2892d7
--- /dev/null
+++ b/mysql-test/suite/tokudb.bugs/r/db743.result
@@ -0,0 +1,13 @@
+drop table if exists t1,t2;
+CREATE TABLE t1(`a` INT) ENGINE=TokuDB;
+CREATE TABLE t2(`a` INT) ENGINE=InnoDB;
+begin;
+insert into t1 values (0);
+insert into t2 values (0);
+commit;
+begin;
+insert into t1 values (1);
+insert into t2 values (1);
+commit;
+include/diff_tables.inc [test.t1, test.t2]
+drop table t1,t2;
diff --git a/mysql-test/suite/tokudb.bugs/t/db743.test b/mysql-test/suite/tokudb.bugs/t/db743.test
new file mode 100644
index 00000000000..5e2bc3e157c
--- /dev/null
+++ b/mysql-test/suite/tokudb.bugs/t/db743.test
@@ -0,0 +1,23 @@
+source include/have_tokudb.inc;
+source include/have_innodb.inc;
+
+disable_warnings;
+drop table if exists t1,t2;
+enable_warnings;
+
+CREATE TABLE t1(`a` INT) ENGINE=TokuDB;
+CREATE TABLE t2(`a` INT) ENGINE=InnoDB;
+
+let $n=0;
+while ($n < 2) {
+    begin;
+    eval insert into t1 values ($n);
+    eval insert into t2 values ($n);
+    commit;
+    inc $n;
+}
+
+let $diff_tables= test.t1, test.t2;
+source include/diff_tables.inc;
+
+drop table t1,t2;
diff --git a/storage/tokudb/ha_tokudb.cc b/storage/tokudb/ha_tokudb.cc
index d9b11dbba3e..f993fe84135 100644
--- a/storage/tokudb/ha_tokudb.cc
+++ b/storage/tokudb/ha_tokudb.cc
@@ -4485,6 +4485,11 @@ int ha_tokudb::index_init(uint keynr, bool sorted) {
     }
     tokudb_active_index = keynr;
 
+#if TOKU_CLUSTERING_IS_COVERING
+    if (keynr < table->s->keys && table->key_info[keynr].option_struct->clustering)
+        key_read = false;
+#endif
+
     last_cursor_error = 0;
     range_lock_grabbed = false;
     range_lock_grabbed_null = false;
@@ -5834,11 +5839,14 @@ void ha_tokudb::position(const uchar * record) {
 //      0, always success
 //
 int ha_tokudb::info(uint flag) {
-    TOKUDB_HANDLER_DBUG_ENTER("%d %lld", flag, (long long) share->rows);
-    int error;
+    TOKUDB_HANDLER_DBUG_ENTER("%d", flag);
+    int error = 0;
+#if TOKU_CLUSTERING_IS_COVERING
+    for (uint i=0; i < table->s->keys; i++)
+        if (key_is_clustering(&table->key_info[i]))
+            table->covering_keys.set_bit(i);
+#endif
     DB_TXN* txn = NULL;
-    uint curr_num_DBs = table->s->keys + tokudb_test(hidden_primary_key);
-    DB_BTREE_STAT64 dict_stats;
     if (flag & HA_STATUS_VARIABLE) {
         // Just to get optimizations right
         stats.records = share->rows + share->rows_from_locked_table;
@@ -5868,18 +5876,12 @@ int ha_tokudb::info(uint flag) {
             else {
                 goto cleanup;
             }
-            error = share->file->get_fragmentation(
-                share->file,
-                &frag_info
-                );
+            error = share->file->get_fragmentation(share->file, &frag_info);
             if (error) { goto cleanup; }
             stats.delete_length = frag_info.unused_bytes;
 
-            error = share->file->stat64(
-                share->file, 
-                txn, 
-                &dict_stats
-                );
+            DB_BTREE_STAT64 dict_stats;
+            error = share->file->stat64(share->file, txn, &dict_stats);
             if (error) { goto cleanup; }
             
             stats.create_time = dict_stats.bt_create_time_sec;
@@ -5915,6 +5917,7 @@ int ha_tokudb::info(uint flag) {
             //
             // this solution is much simpler than trying to maintain an 
             // accurate number of valid keys at the handlerton layer.
+            uint curr_num_DBs = table->s->keys + tokudb_test(hidden_primary_key);
             for (uint i = 0; i < curr_num_DBs; i++) {
                 // skip the primary key, skip dropped indexes
                 if (i == primary_key || share->key_file[i] == NULL) {
@@ -6365,10 +6368,12 @@ static toku_compression_method get_compression_method(DB *file) {
     return method;
 }
 
+#if TOKU_INCLUDE_ROW_TYPE_COMPRESSION
 enum row_type ha_tokudb::get_row_type(void) const {
     toku_compression_method compression_method = get_compression_method(share->file);
     return toku_compression_method_to_row_type(compression_method);
 }
+#endif
 
 static int create_sub_table(
     const char *table_name, 
@@ -6444,16 +6449,16 @@ void ha_tokudb::update_create_info(HA_CREATE_INFO* create_info) {
             create_info->auto_increment_value = stats.auto_increment_value;
         }
     }
+#if TOKU_INCLUDE_ROW_TYPE_COMPRESSION
     if (!(create_info->used_fields & HA_CREATE_USED_ROW_FORMAT)) {
         // show create table asks us to update this create_info, this makes it
         // so we'll always show what compression type we're using
         create_info->row_type = get_row_type();
-#if TOKU_INCLUDE_ROW_TYPE_COMPRESSION
         if (create_info->row_type == ROW_TYPE_TOKU_ZLIB && THDVAR(ha_thd(), hide_default_row_format) != 0) {
             create_info->row_type = ROW_TYPE_DEFAULT;
         }
-#endif
     }
+#endif
 }
 
 //
@@ -6778,6 +6783,14 @@ int ha_tokudb::create(const char *name, TABLE * form, HA_CREATE_INFO * create_in
 
     memset(&kc_info, 0, sizeof(kc_info));
 
+#if 100000 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 100999
+    // TokuDB does not support discover_table_names() and writes no files
+    // in the database directory, so automatic filename-based
+    // discover_table_names() doesn't work either. So, it must force .frm
+    // file to disk.
+    form->s->write_frm_image();
+#endif
+
 #if TOKU_INCLUDE_OPTION_STRUCTS
     const srv_row_format_t row_format = (srv_row_format_t) form->s->option_struct->row_format;
 #else
diff --git a/storage/tokudb/ha_tokudb.h b/storage/tokudb/ha_tokudb.h
index cdbadce6b67..ba9c5e0d8ba 100644
--- a/storage/tokudb/ha_tokudb.h
+++ b/storage/tokudb/ha_tokudb.h
@@ -756,9 +756,9 @@ public:
         uchar* buf,
         DBT* key_to_compare
         );
-
+#if TOKU_INCLUDE_ROW_TYPE_COMPRESSION
     enum row_type get_row_type() const;
-
+#endif
 private:
     int read_full_row(uchar * buf);
     int __close();
diff --git a/storage/tokudb/hatoku_defines.h b/storage/tokudb/hatoku_defines.h
index a24aade6bb8..91f717379d5 100644
--- a/storage/tokudb/hatoku_defines.h
+++ b/storage/tokudb/hatoku_defines.h
@@ -113,6 +113,7 @@ PATENT RIGHTS GRANT:
 #endif
 #define TOKU_INCLUDE_OPTION_STRUCTS 1
 #define TOKU_OPTIMIZE_WITH_RECREATE 1
+#define TOKU_CLUSTERING_IS_COVERING 1
 
 #elif 50700 <= MYSQL_VERSION_ID && MYSQL_VERSION_ID <= 50799
 // mysql 5.7 with no patches
diff --git a/storage/tokudb/hatoku_hton.cc b/storage/tokudb/hatoku_hton.cc
index bef9b36e4de..eb625231a19 100644
--- a/storage/tokudb/hatoku_hton.cc
+++ b/storage/tokudb/hatoku_hton.cc
@@ -1560,7 +1560,7 @@ static int tokudb_file_map_fill_table(THD *thd, TABLE_LIST *tables, COND *cond)
     } else {
         error = tokudb_file_map(table, thd);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     rw_unlock(&tokudb_hton_initialized_lock);
@@ -1709,7 +1709,7 @@ static int tokudb_fractal_tree_info_fill_table(THD *thd, TABLE_LIST *tables, CON
     } else {
         error = tokudb_fractal_tree_info(table, thd);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     //3938: unlock the status flag lock
@@ -1924,7 +1924,7 @@ static int tokudb_fractal_tree_block_map_fill_table(THD *thd, TABLE_LIST *tables
     } else {
         error = tokudb_fractal_tree_block_map(table, thd);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     //3938: unlock the status flag lock
@@ -2080,7 +2080,7 @@ static int tokudb_trx_fill_table(THD *thd, TABLE_LIST *tables, COND *cond) {
         struct tokudb_trx_extra e = { thd, tables->table };
         error = db_env->iterate_live_transactions(db_env, tokudb_trx_callback, &e);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     rw_unlock(&tokudb_hton_initialized_lock);
@@ -2167,7 +2167,7 @@ static int tokudb_lock_waits_fill_table(THD *thd, TABLE_LIST *tables, COND *cond
         struct tokudb_lock_waits_extra e = { thd, tables->table };
         error = db_env->iterate_pending_lock_requests(db_env, tokudb_lock_waits_callback, &e);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     rw_unlock(&tokudb_hton_initialized_lock);
@@ -2258,7 +2258,7 @@ static int tokudb_locks_fill_table(THD *thd, TABLE_LIST *tables, COND *cond) {
         struct tokudb_locks_extra e = { thd, tables->table };
         error = db_env->iterate_live_transactions(db_env, tokudb_locks_callback, &e);
         if (error)
-            my_error(ER_GET_ERRNO, MYF(0), error);
+            my_error(ER_GET_ERRNO, MYF(0), error, tokudb_hton_name);
     }
 
     rw_unlock(&tokudb_hton_initialized_lock);