BUG#38173 Field doesn't have a default value with row-based replication

NOTE: Backporting the patch to next-mr.
      
The reason of  the bug was incompatibile with the master side behaviour.
INSERT query on the master is allowed to insert into a table without specifying
values of DEFAULT-less fields if sql_mode is not strict.
            
Fixed with checking sql_mode by the sql thread to decide how to react.
Non-strict sql_mode should allow Write_rows event to complete.
            
todo: warnings can be shown via show slave status, still this is a 
separate rather general issue how to show warnings for the slave threads.

mysql-test/extra/rpl_tests/rpl_extraSlave_Col.test

@@ -407,13 +407,18 @@ sync_slave_with_master;
 ###########################################
 # Bug#22234, Bug#23907 Extra Slave Col is not 
 # erroring on extra col with no default values.
-########################################################
+###############################################################
+# Error reaction is up to sql_mode of the slave sql (bug#38173)
 #--echo *** Create t9 on slave  ***
 STOP SLAVE;
 RESET SLAVE;
 eval CREATE TABLE t9 (a INT KEY, b BLOB, c CHAR(5),
                       d TIMESTAMP,
-                      e INT NOT NULL) ENGINE=$engine_type;
+                      e INT NOT NULL,
+		      f text not null,
+		      g text,
+		      h blob not null,
+		      i blob) ENGINE=$engine_type;
 
 --echo *** Create t9 on Master ***
 connection master;
@@ -431,13 +436,25 @@ set @b1 = 'b1b1b1b1';
 set @b1 = concat(@b1,@b1);
 INSERT INTO t9 () VALUES(1,@b1,'Kyle'),(2,@b1,'JOE'),(3,@b1,'QA');
 
-connection slave;
---source include/wait_for_slave_sql_to_stop.inc
---replace_result $MASTER_MYPORT MASTER_PORT
---replace_column 1 # 4 # 7 # 8 # 9 # 16 # 22 # 23 # 33 # 35 # 36 #
---query_vertical SHOW SLAVE STATUS
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+# the test would stop slave if @@sql_mode for the sql thread
+# was set to strict. Otherwise, as with this tests setup, 
+# the implicit defaults will be inserted into fields even though
+# they are declared without DEFAULT clause.
+
+sync_slave_with_master;
+select * from t9;
+
+# todo: fix Bug #43992 slave sql thread can't tune own sql_mode ...
+# and add/restore waiting for stop test
+
+#--source include/wait_for_slave_sql_to_stop.inc
+#--replace_result $MASTER_MYPORT MASTER_PORT
+#--replace_column 1 # 4 # 7 # 8 # 9 # 16 # 22 # 23 # 33 # 35 # 36 #
+#--query_vertical SHOW SLAVE STATUS
+#SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
+#START SLAVE;
+
+
 
 #--echo *** Drop t9  ***
 #connection master;

mysql-test/extra/rpl_tests/rpl_row_tabledefs.test

@@ -111,21 +111,18 @@ SELECT a,b,x FROM t1_int ORDER BY a;
 SELECT a,b,HEX(x),HEX(y),HEX(z) FROM t1_bit ORDER BY a;
 SELECT a,b,x FROM t1_char ORDER BY a;
 
-# Each of these inserts should generate an error and stop the slave
-
 connection master;
 INSERT INTO t9 VALUES (2);
 sync_slave_with_master;
 # Now slave is guaranteed to be running
 connection master;
 INSERT INTO t1_nodef VALUES (1,2);
-connection slave;
---source include/wait_for_slave_sql_to_stop.inc
---replace_result $MASTER_MYPORT MASTER_PORT
---replace_column 1 # 4 # 7 # 8 # 9 # 20 <Last_Error> 22 # 23 # 33 # 35 <Last_IO_Errno> 36 <Last_IO_Error> 38 <Last_SQL_Error>
---query_vertical SHOW SLAVE STATUS
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+
+# Last insert on wider slave table succeeds while slave sql sql_mode permits.
+# The previous version of the above test expected slave sql to stop.
+# bug#38173 relaxed conditions to stop only with the strict mode.
+sync_slave_with_master;
+select count(*) from t1_nodef;
 
 #
 # Replicating to tables with fewer columns at the end works as of WL#3228

mysql-test/suite/rpl/r/rpl_extraCol_innodb.result

@@ -404,7 +404,11 @@ STOP SLAVE;
 RESET SLAVE;
 CREATE TABLE t9 (a INT KEY, b BLOB, c CHAR(5),
 d TIMESTAMP,
-e INT NOT NULL) ENGINE='InnoDB';
+e INT NOT NULL,
+f text not null,
+g text,
+h blob not null,
+i blob) ENGINE='InnoDB';
 *** Create t9 on Master ***
 CREATE TABLE t9 (a INT PRIMARY KEY, b BLOB, c CHAR(5)
 ) ENGINE='InnoDB';
@@ -415,47 +419,11 @@ START SLAVE;
 set @b1 = 'b1b1b1b1';
 set @b1 = concat(@b1,@b1);
 INSERT INTO t9 () VALUES(1,@b1,'Kyle'),(2,@b1,'JOE'),(3,@b1,'QA');
-SHOW SLAVE STATUS;
-Slave_IO_State	#
-Master_Host	127.0.0.1
-Master_User	root
-Master_Port	#
-Connect_Retry	1
-Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	#
-Relay_Log_File	#
-Relay_Log_Pos	#
-Relay_Master_Log_File	master-bin.000001
-Slave_IO_Running	Yes
-Slave_SQL_Running	No
-Replicate_Do_DB	
-Replicate_Ignore_DB	
-Replicate_Do_Table	
-Replicate_Ignore_Table	#
-Replicate_Wild_Do_Table	
-Replicate_Wild_Ignore_Table	
-Last_Errno	1364
-Last_Error	Could not execute Write_rows event on table test.t9; Field 'e' doesn't have a default value, Error_code: 1364; handler error HA_ERR_ROWS_EVENT_APPLY; the event's master log master-bin.000001, end_log_pos 330
-Skip_Counter	0
-Exec_Master_Log_Pos	#
-Relay_Log_Space	#
-Until_Condition	None
-Until_Log_File	
-Until_Log_Pos	0
-Master_SSL_Allowed	No
-Master_SSL_CA_File	
-Master_SSL_CA_Path	
-Master_SSL_Cert	
-Master_SSL_Cipher	
-Master_SSL_Key	
-Seconds_Behind_Master	#
-Master_SSL_Verify_Server_Cert	No
-Last_IO_Errno	#
-Last_IO_Error	#
-Last_SQL_Errno	1364
-Last_SQL_Error	Could not execute Write_rows event on table test.t9; Field 'e' doesn't have a default value, Error_code: 1364; handler error HA_ERR_ROWS_EVENT_APPLY; the event's master log master-bin.000001, end_log_pos 330
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+select * from t9;
+a	b	c	d	e	f	g	h	i
+1	b1b1b1b1b1b1b1b1	Kyle	0000-00-00 00:00:00	0		NULL		NULL
+2	b1b1b1b1b1b1b1b1	JOE	0000-00-00 00:00:00	0		NULL		NULL
+3	b1b1b1b1b1b1b1b1	QA	0000-00-00 00:00:00	0		NULL		NULL
 *** Create t10 on slave  ***
 STOP SLAVE;
 RESET SLAVE;

mysql-test/suite/rpl/r/rpl_extraCol_myisam.result

@@ -404,7 +404,11 @@ STOP SLAVE;
 RESET SLAVE;
 CREATE TABLE t9 (a INT KEY, b BLOB, c CHAR(5),
 d TIMESTAMP,
-e INT NOT NULL) ENGINE='MyISAM';
+e INT NOT NULL,
+f text not null,
+g text,
+h blob not null,
+i blob) ENGINE='MyISAM';
 *** Create t9 on Master ***
 CREATE TABLE t9 (a INT PRIMARY KEY, b BLOB, c CHAR(5)
 ) ENGINE='MyISAM';
@@ -415,47 +419,11 @@ START SLAVE;
 set @b1 = 'b1b1b1b1';
 set @b1 = concat(@b1,@b1);
 INSERT INTO t9 () VALUES(1,@b1,'Kyle'),(2,@b1,'JOE'),(3,@b1,'QA');
-SHOW SLAVE STATUS;
-Slave_IO_State	#
-Master_Host	127.0.0.1
-Master_User	root
-Master_Port	#
-Connect_Retry	1
-Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	#
-Relay_Log_File	#
-Relay_Log_Pos	#
-Relay_Master_Log_File	master-bin.000001
-Slave_IO_Running	Yes
-Slave_SQL_Running	No
-Replicate_Do_DB	
-Replicate_Ignore_DB	
-Replicate_Do_Table	
-Replicate_Ignore_Table	#
-Replicate_Wild_Do_Table	
-Replicate_Wild_Ignore_Table	
-Last_Errno	1364
-Last_Error	Could not execute Write_rows event on table test.t9; Field 'e' doesn't have a default value, Error_code: 1364; handler error HA_ERR_ROWS_EVENT_APPLY; the event's master log master-bin.000001, end_log_pos 330
-Skip_Counter	0
-Exec_Master_Log_Pos	#
-Relay_Log_Space	#
-Until_Condition	None
-Until_Log_File	
-Until_Log_Pos	0
-Master_SSL_Allowed	No
-Master_SSL_CA_File	
-Master_SSL_CA_Path	
-Master_SSL_Cert	
-Master_SSL_Cipher	
-Master_SSL_Key	
-Seconds_Behind_Master	#
-Master_SSL_Verify_Server_Cert	No
-Last_IO_Errno	#
-Last_IO_Error	#
-Last_SQL_Errno	1364
-Last_SQL_Error	Could not execute Write_rows event on table test.t9; Field 'e' doesn't have a default value, Error_code: 1364; handler error HA_ERR_ROWS_EVENT_APPLY; the event's master log master-bin.000001, end_log_pos 330
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+select * from t9;
+a	b	c	d	e	f	g	h	i
+1	b1b1b1b1b1b1b1b1	Kyle	0000-00-00 00:00:00	0		NULL		NULL
+2	b1b1b1b1b1b1b1b1	JOE	0000-00-00 00:00:00	0		NULL		NULL
+3	b1b1b1b1b1b1b1b1	QA	0000-00-00 00:00:00	0		NULL		NULL
 *** Create t10 on slave  ***
 STOP SLAVE;
 RESET SLAVE;

mysql-test/suite/rpl/r/rpl_row_tabledefs_2myisam.result

@@ -105,47 +105,9 @@ a	b	x
 2	10	Foo is a bar
 INSERT INTO t9 VALUES (2);
 INSERT INTO t1_nodef VALUES (1,2);
-SHOW SLAVE STATUS;
-Slave_IO_State	#
-Master_Host	127.0.0.1
-Master_User	root
-Master_Port	#
-Connect_Retry	1
-Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	#
-Relay_Log_File	#
-Relay_Log_Pos	#
-Relay_Master_Log_File	master-bin.000001
-Slave_IO_Running	Yes
-Slave_SQL_Running	No
-Replicate_Do_DB	
-Replicate_Ignore_DB	
-Replicate_Do_Table	
-Replicate_Ignore_Table	
-Replicate_Wild_Do_Table	
-Replicate_Wild_Ignore_Table	
-Last_Errno	1364
-Last_Error	<Last_Error>
-Skip_Counter	0
-Exec_Master_Log_Pos	#
-Relay_Log_Space	#
-Until_Condition	None
-Until_Log_File	
-Until_Log_Pos	0
-Master_SSL_Allowed	No
-Master_SSL_CA_File	
-Master_SSL_CA_Path	
-Master_SSL_Cert	
-Master_SSL_Cipher	
-Master_SSL_Key	
-Seconds_Behind_Master	#
-Master_SSL_Verify_Server_Cert	No
-Last_IO_Errno	<Last_IO_Errno>
-Last_IO_Error	<Last_IO_Error>
-Last_SQL_Errno	1364
-Last_SQL_Error	<Last_SQL_Error>
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+select count(*) from t1_nodef;
+count(*)
+1
 INSERT INTO t9 VALUES (2);
 **** On Master ****
 INSERT INTO t2 VALUES (2,4);

mysql-test/suite/rpl/r/rpl_row_tabledefs_3innodb.result

@@ -105,47 +105,9 @@ a	b	x
 2	10	Foo is a bar
 INSERT INTO t9 VALUES (2);
 INSERT INTO t1_nodef VALUES (1,2);
-SHOW SLAVE STATUS;
-Slave_IO_State	#
-Master_Host	127.0.0.1
-Master_User	root
-Master_Port	#
-Connect_Retry	1
-Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	#
-Relay_Log_File	#
-Relay_Log_Pos	#
-Relay_Master_Log_File	master-bin.000001
-Slave_IO_Running	Yes
-Slave_SQL_Running	No
-Replicate_Do_DB	
-Replicate_Ignore_DB	
-Replicate_Do_Table	
-Replicate_Ignore_Table	
-Replicate_Wild_Do_Table	
-Replicate_Wild_Ignore_Table	
-Last_Errno	1364
-Last_Error	<Last_Error>
-Skip_Counter	0
-Exec_Master_Log_Pos	#
-Relay_Log_Space	#
-Until_Condition	None
-Until_Log_File	
-Until_Log_Pos	0
-Master_SSL_Allowed	No
-Master_SSL_CA_File	
-Master_SSL_CA_Path	
-Master_SSL_Cert	
-Master_SSL_Cipher	
-Master_SSL_Key	
-Seconds_Behind_Master	#
-Master_SSL_Verify_Server_Cert	No
-Last_IO_Errno	<Last_IO_Errno>
-Last_IO_Error	<Last_IO_Error>
-Last_SQL_Errno	1364
-Last_SQL_Error	<Last_SQL_Error>
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
-START SLAVE;
+select count(*) from t1_nodef;
+count(*)
+1
 INSERT INTO t9 VALUES (2);
 **** On Master ****
 INSERT INTO t2 VALUES (2,4);

sql/log_event.cc

@@ -8446,7 +8446,10 @@ Rows_log_event::write_row(const Relay_log_info *const rli,
   /* fill table->record[0] with default values */
 
   if ((error= prepare_record(table, m_width,
-                             TRUE /* check if columns have def. values */)))
+                             table->file->ht->db_type != DB_TYPE_NDBCLUSTER,
+                             (rli->sql_thd->variables.sql_mode &
+                               (MODE_STRICT_TRANS_TABLES |
+                                MODE_STRICT_ALL_TABLES)))))
     DBUG_RETURN(error);
   
   /* unpack row into table->record[0] */

sql/rpl_record.cc

@@ -305,13 +305,17 @@ unpack_row(Relay_log_info const *rli,
   @param table  Table whose record[0] buffer is prepared. 
   @param skip   Number of columns for which default/nullable check 
                 should be skipped.
-  @param check  Indicates if errors should be raised when checking 
-                default/nullable field properties.
+  @param check  Specifies if lack of default error needs checking.
+  @param abort_on_warning
+                Controls how to react on lack of a field's default.
+                The parameter mimics the master side one for
+                @c check_that_all_fields_are_given_values.
                 
   @returns 0 on success or a handler level error code
  */ 
 int prepare_record(TABLE *const table, 
-                   const uint skip, const bool check)
+                   const uint skip, const bool check,
+                   const bool abort_on_warning)
 {
   DBUG_ENTER("prepare_record");
 
@@ -326,17 +330,27 @@ int prepare_record(TABLE *const table,
   if (skip >= table->s->fields || !check)
     DBUG_RETURN(0);
 
-  /* Checking if exists default/nullable fields in the default values. */
-
-  for (Field **field_ptr= table->field+skip ; *field_ptr ; ++field_ptr)
+  /*
+    For fields the extra fields on the slave, we check if they have a default.
+    The check follows the same rules as the INSERT query without specifying an
+    explicit value for a field not having the explicit default 
+    (@c check_that_all_fields_are_given_values()).
+  */
+  for (Field **field_ptr= table->field+skip; *field_ptr; ++field_ptr)
   {
     uint32 const mask= NOT_NULL_FLAG | NO_DEFAULT_VALUE_FLAG;
     Field *const f= *field_ptr;
-
-    if (((f->flags & mask) == mask))
+    if ((f->flags &  NO_DEFAULT_VALUE_FLAG) &&
+        (f->real_type() != MYSQL_TYPE_ENUM))
     {
-      my_error(ER_NO_DEFAULT_FOR_FIELD, MYF(0), f->field_name);
-      error = HA_ERR_ROWS_EVENT_APPLY;
+      push_warning_printf(current_thd, abort_on_warning?
+                          MYSQL_ERROR::WARN_LEVEL_ERROR :
+                          MYSQL_ERROR::WARN_LEVEL_WARN,
+                          ER_NO_DEFAULT_FOR_FIELD,
+                          ER(ER_NO_DEFAULT_FOR_FIELD),
+                          f->field_name);
+      if (abort_on_warning)
+        error = HA_ERR_ROWS_EVENT_APPLY;
     }
   }
 

sql/rpl_record.h

@@ -30,7 +30,8 @@ int unpack_row(Relay_log_info const *rli,
                uchar const **const row_end, ulong *const master_reclength);
 
 // Fill table's record[0] with default values.
-int prepare_record(TABLE *const, const uint =0, const bool =FALSE);
+int prepare_record(TABLE *const table, const uint skip, const bool check,
+                   const bool abort_on_warning= FALSE);
 #endif
 
 #endif