Merge branch '10.0' into 10.1

mysql-test/r/assign_key_cache.result

+set global my_cache.key_buffer_size = 1024*1024;
+create table t1 (i int) engine=myisam partition by hash (i) partitions 2;
+xa start 'xid';
+cache index t1 partition (non_existing_partition) in my_cache;
+Table	Op	Msg_type	Msg_text
+test.t1	assign_to_keycache	error	Error in list of partitions to test.t1
+cache index t1 partition (p1) in my_cache;
+Table	Op	Msg_type	Msg_text
+test.t1	assign_to_keycache	status	OK
+xa end 'xid';
+xa rollback 'xid';
+drop table t1;
+set global my_cache.key_buffer_size = 0;

mysql-test/r/implicit_commit.result

@@ -562,7 +562,7 @@ INSERT INTO db1.trans (a) VALUES (1);
 cache index t3 in keycache;
 CALL db1.test_if_commit();
 IMPLICIT COMMIT
-YES
+NO
 set global keycache.key_buffer_size=0;
 #
 # SQLCOM_PRELOAD_KEYS
@@ -571,7 +571,7 @@ INSERT INTO db1.trans (a) VALUES (1);
 load index into cache t3;
 CALL db1.test_if_commit();
 IMPLICIT COMMIT
-YES
+NO
 #
 # SQLCOM_FLUSH
 #

mysql-test/t/assign_key_cache.test

+#
+# MDEV-15216 Assertion `! is_set() || m_can_overwrite_status' failed in Diagnostics_area::set_error_status upon operation inside XA
+#
+--source include/have_partition.inc
+set global my_cache.key_buffer_size = 1024*1024;
+create table t1 (i int) engine=myisam partition by hash (i) partitions 2;
+xa start 'xid';
+cache index t1 partition (non_existing_partition) in my_cache;
+cache index t1 partition (p1) in my_cache;
+xa end 'xid';
+xa rollback 'xid';
+drop table t1;
+set global my_cache.key_buffer_size = 0;

sql/sql_admin.cc

@@ -1113,7 +1113,9 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
     }
     else
     {
-      if (trans_commit_stmt(thd) || trans_commit_implicit(thd))
+      if (trans_commit_stmt(thd) ||
+          (stmt_causes_implicit_commit(thd, CF_IMPLICIT_COMMIT_END) &&
+           trans_commit_implicit(thd)))
         goto err;
     }
     close_thread_tables(thd);
@@ -1147,7 +1149,8 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
 err:
   /* Make sure this table instance is not reused after the failure. */
   trans_rollback_stmt(thd);
-  trans_rollback(thd);
+  if (stmt_causes_implicit_commit(thd, CF_IMPLICIT_COMMIT_END))
+    trans_rollback(thd);
   if (table && table->table)
   {
     table->table->m_needs_reopen= true;

sql/sql_parse.cc

@@ -198,7 +198,7 @@ static bool some_non_temp_table_to_be_updated(THD *thd, TABLE_LIST *tables)
 
 
 /*
-  Implicitly commit a active transaction if statement requires so.
+  Check whether the statement implicitly commits an active transaction.
 
   @param thd    Thread handle.
   @param mask   Bitmask used for the SQL command match.
@@ -206,7 +206,7 @@ static bool some_non_temp_table_to_be_updated(THD *thd, TABLE_LIST *tables)
   @return 0     No implicit commit
   @return 1     Do a commit
 */
-static bool stmt_causes_implicit_commit(THD *thd, uint mask)
+bool stmt_causes_implicit_commit(THD *thd, uint mask)
 {
   LEX *lex= thd->lex;
   bool skip= FALSE;

sql/sql_parse.h

@@ -85,6 +85,7 @@ bool check_identifier_name(LEX_STRING *str, uint max_char_length,
                            uint err_code, const char *param_for_err_msg);
 bool mysql_test_parse_for_slave(THD *thd,char *inBuf,uint length);
 bool sqlcom_can_generate_row_events(const THD *thd);
+bool stmt_causes_implicit_commit(THD *thd, uint mask);
 bool is_update_query(enum enum_sql_command command);
 bool is_log_table_write_query(enum enum_sql_command command);
 bool alloc_query(THD *thd, const char *packet, uint packet_length);