Bug#30919

  "Rows not deleted from innodb partitioned tables if --innodb_autoinc_lock_mode=0"

  Due to a previous bugfix which initializes a previously uninitialized
  variable, ha_partition::get_auto_increment() may fail to operate
  correctly when the storage engine reports that it is only reserving
  one value and one or more partitions have a different 'next-value'.
  Currently, only affects Innodb's new-style auto-increment code which
  reserves larger blocks of values and has less inter-thread contention.

mysql-test/suite/rpl/r/rpl_innodb_bug28430.result

@@ -101,10 +101,10 @@ SELECT count(*) as "Master regular" FROM test.regular_tbl;
 Master regular	500
 CALL test.proc_bykey();
 SELECT count(*) as "Master bykey" FROM test.bykey_tbl;
-Master bykey	811
+Master bykey	500
 CALL test.proc_byrange();
 SELECT count(*) as "Master byrange" FROM test.byrange_tbl;
-Master byrange	996
+Master byrange	500
 show create table test.byrange_tbl;
 Table	byrange_tbl
 Create Table	CREATE TABLE `byrange_tbl` (
@@ -123,9 +123,9 @@ Master_User	root
 Master_Port	12000
 Connect_Retry	1
 Master_Log_File	master-bin.000001
-Read_Master_Log_Pos	776796
+Read_Master_Log_Pos	945644
 Relay_Log_File	slave-relay-bin.000003
-Relay_Log_Pos	776942
+Relay_Log_Pos	945790
 Relay_Master_Log_File	master-bin.000001
 Slave_IO_Running	Yes
 Slave_SQL_Running	Yes
@@ -138,8 +138,8 @@ Replicate_Wild_Ignore_Table
 Last_Errno	0
 Last_Error	
 Skip_Counter	0
-Exec_Master_Log_Pos	776796
-Relay_Log_Space	777097
+Exec_Master_Log_Pos	945644
+Relay_Log_Space	945945
 Until_Condition	None
 Until_Log_File	
 Until_Log_Pos	0
@@ -158,9 +158,9 @@ Last_SQL_Error
 SELECT count(*) "Slave norm" FROM test.regular_tbl;
 Slave norm	500
 SELECT count(*) "Slave bykey" FROM test.bykey_tbl;
-Slave bykey	811
+Slave bykey	500
 SELECT count(*) "Slave byrange" FROM test.byrange_tbl;
-Slave byrange	996
+Slave byrange	500
 DROP PROCEDURE test.proc_norm;
 DROP PROCEDURE test.proc_bykey;
 DROP PROCEDURE test.proc_byrange;

mysql-test/suite/rpl/r/rpl_innodb_bug30919.result

+DROP DATABASE IF EXISTS test;
+CREATE DATABASE test;
+use test;
+CREATE TABLE test.part_tbl(id MEDIUMINT NOT NULL AUTO_INCREMENT,
+dt TIMESTAMP, user CHAR(255), uuidf LONGBLOB,
+fkid MEDIUMINT, filler VARCHAR(255),
+PRIMARY KEY(id)) ENGINE='innodb'
+PARTITION BY RANGE(id)
+SUBPARTITION BY hash(id) subpartitions 2
+(PARTITION pa3 values less than (42),
+PARTITION pa6 values less than (60),
+PARTITION pa7 values less than (70),
+PARTITION pa8 values less than (80),
+PARTITION pa9 values less than (90),
+PARTITION pa10 values less than (100),
+PARTITION pa11 values less than MAXVALUE);
+CREATE PROCEDURE test.proc_part()
+BEGIN
+DECLARE ins_count INT DEFAULT 1000;
+DECLARE del_count INT;
+DECLARE cur_user VARCHAR(255);
+DECLARE local_uuid VARCHAR(255);
+DECLARE local_time TIMESTAMP;
+SET local_time= NOW();
+SET cur_user= CURRENT_USER();
+SET local_uuid= UUID();
+WHILE ins_count > 0 DO
+INSERT INTO test.part_tbl VALUES (NULL, NOW(), USER() , UUID(),
+ins_count,'Going to test MBR for MySQL');
+SET ins_count = ins_count - 1;
+END WHILE;
+SELECT MAX(id) FROM test.part_tbl INTO del_count;
+WHILE del_count > 0 DO
+DELETE FROM test.part_tbl WHERE id = del_count;
+select count(*) as internal_count, del_count  -- these two lines are for
+FROM test.part_tbl;                           -- debug to show the problem
+SET del_count = del_count - 2;
+END WHILE;
+END|
+CALL test.proc_part();
+internal_count	del_count
+999	1000
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+998	998
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+997	996
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+internal_count	del_count
+579	160
+internal_count	del_count
+578	158
+internal_count	del_count
+577	156
+internal_count	del_count
+576	154
+internal_count	del_count
+575	152
+internal_count	del_count
+574	150
+internal_count	del_count
+573	148
+internal_count	del_count
+572	146
+internal_count	del_count
+571	144
+internal_count	del_count
+570	142
+internal_count	del_count
+569	140
+internal_count	del_count
+568	138
+internal_count	del_count
+567	136
+internal_count	del_count
+566	134
+internal_count	del_count
+565	132
+internal_count	del_count
+564	130
+internal_count	del_count
+563	128
+internal_count	del_count
+562	126
+internal_count	del_count
+561	124
+internal_count	del_count
+560	122
+internal_count	del_count
+559	120
+internal_count	del_count
+558	118
+internal_count	del_count
+557	116
+internal_count	del_count
+556	114
+internal_count	del_count
+555	112
+internal_count	del_count
+554	110
+internal_count	del_count
+553	108
+internal_count	del_count
+552	106
+internal_count	del_count
+551	104
+internal_count	del_count
+550	102
+internal_count	del_count
+549	100
+internal_count	del_count
+548	98
+internal_count	del_count
+547	96
+internal_count	del_count
+546	94
+internal_count	del_count
+545	92
+internal_count	del_count
+544	90
+internal_count	del_count
+543	88
+internal_count	del_count
+542	86
+internal_count	del_count
+541	84
+internal_count	del_count
+540	82
+internal_count	del_count
+539	80
+internal_count	del_count
+538	78
+internal_count	del_count
+537	76
+internal_count	del_count
+536	74
+internal_count	del_count
+535	72
+internal_count	del_count
+534	70
+internal_count	del_count
+533	68
+internal_count	del_count
+532	66
+internal_count	del_count
+531	64
+internal_count	del_count
+530	62
+internal_count	del_count
+529	60
+internal_count	del_count
+528	58
+internal_count	del_count
+527	56
+internal_count	del_count
+526	54
+internal_count	del_count
+525	52
+internal_count	del_count
+524	50
+internal_count	del_count
+523	48
+internal_count	del_count
+522	46
+internal_count	del_count
+521	44
+internal_count	del_count
+520	42
+internal_count	del_count
+519	40
+internal_count	del_count
+518	38
+internal_count	del_count
+517	36
+internal_count	del_count
+516	34
+internal_count	del_count
+515	32
+internal_count	del_count
+514	30
+internal_count	del_count
+513	28
+internal_count	del_count
+512	26
+internal_count	del_count
+511	24
+internal_count	del_count
+510	22
+internal_count	del_count
+509	20
+internal_count	del_count
+508	18
+internal_count	del_count
+507	16
+internal_count	del_count
+506	14
+internal_count	del_count
+505	12
+internal_count	del_count
+504	10
+internal_count	del_count
+503	8
+internal_count	del_count
+502	6
+internal_count	del_count
+501	4
+internal_count	del_count
+500	2
+select count(*) as Part from test.part_tbl;
+Part
+500
+DROP PROCEDURE test.proc_part;
+DROP TABLE test.part_tbl;

mysql-test/suite/rpl/t/rpl_innodb_bug30919-master.opt

+--innodb --innodb_autoinc_lock_mode=0

mysql-test/suite/rpl/t/rpl_innodb_bug30919.test

+--source include/have_innodb.inc
+--vertical_results
+let $engine_type= 'innodb';
+
+###### CLEAN UP SECTION ##############
+DROP DATABASE IF EXISTS test;
+CREATE DATABASE test;
+
+######## Creat Table Section #########
+use test;
+
+eval CREATE TABLE test.part_tbl(id MEDIUMINT NOT NULL AUTO_INCREMENT,
+                           dt TIMESTAMP, user CHAR(255), uuidf LONGBLOB,
+                           fkid MEDIUMINT, filler VARCHAR(255),
+                           PRIMARY KEY(id)) ENGINE=$engine_type
+                                PARTITION BY RANGE(id)
+                                SUBPARTITION BY hash(id) subpartitions 2
+                                (PARTITION pa3 values less than (42),
+                                 PARTITION pa6 values less than (60),
+                                 PARTITION pa7 values less than (70),
+                                 PARTITION pa8 values less than (80),
+                                 PARTITION pa9 values less than (90),
+                                 PARTITION pa10 values less than (100),
+                                 PARTITION pa11 values less than MAXVALUE);
+
+######## Create SPs, Functions, Views and Triggers Section ##############
+
+delimiter |;
+
+CREATE PROCEDURE test.proc_part()
+BEGIN
+   DECLARE ins_count INT DEFAULT 1000;
+   DECLARE del_count INT;
+   DECLARE cur_user VARCHAR(255);
+   DECLARE local_uuid VARCHAR(255);
+   DECLARE local_time TIMESTAMP;
+
+   SET local_time= NOW();
+   SET cur_user= CURRENT_USER();
+   SET local_uuid= UUID();
+
+   WHILE ins_count > 0 DO
+     INSERT INTO test.part_tbl VALUES (NULL, NOW(), USER() , UUID(),
+                                   ins_count,'Going to test MBR for MySQL');
+     SET ins_count = ins_count - 1;
+   END WHILE;
+   SELECT MAX(id) FROM test.part_tbl INTO del_count;
+   WHILE del_count > 0 DO
+     DELETE FROM test.part_tbl WHERE id = del_count;
+     select count(*) as internal_count, del_count  -- these two lines are for
+     FROM test.part_tbl;                           -- debug to show the problem
+     SET del_count = del_count - 2;
+   END WHILE;
+END|
+
+delimiter ;|
+
+############ Finish Setup Section ###################
+
+############ Test Section ###################
+--horizontal_results
+
+CALL test.proc_part();
+
+select count(*) as Part from test.part_tbl;
+
+DROP PROCEDURE test.proc_part;
+DROP TABLE test.part_tbl;
+

sql/ha_partition.cc

@@ -2693,7 +2693,17 @@ int ha_partition::write_row(uchar * buf)
     or a new row, then update the auto_increment value in the record.
   */
   if (table->next_number_field && buf == table->record[0])
-    update_auto_increment();
+  {
+    error= update_auto_increment();
+
+    /*
+      If we have failed to set the auto-increment value for this row,
+      it is highly likely that we will not be able to insert it into
+      the correct partition. We must check and fail if neccessary.
+    */
+    if (error)
+      DBUG_RETURN(error);
+  }
 
   my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
 #ifdef NOT_NEEDED
@@ -5456,8 +5466,10 @@ void ha_partition::get_auto_increment(ulonglong offset, ulonglong increment,
   ulonglong first_value_part, last_value_part, nb_reserved_values_part,
     last_value= ~ (ulonglong) 0;
   handler **pos, **end;
+  bool retry= TRUE;
   DBUG_ENTER("ha_partition::get_auto_increment");
 
+again:
   for (pos=m_file, end= m_file+ m_tot_parts; pos != end ; pos++)
   {
     first_value_part= *first_value;
@@ -5466,7 +5478,8 @@ void ha_partition::get_auto_increment(ulonglong offset, ulonglong increment,
     if (first_value_part == ~(ulonglong)(0)) // error in one partition
     {
       *first_value= first_value_part;
-      break;
+      sql_print_error("Partition failed to reserve auto_increment value");
+      DBUG_VOID_RETURN;
     }
     /*
       Partition has reserved an interval. Intersect it with the intervals
@@ -5479,6 +5492,25 @@ void ha_partition::get_auto_increment(ulonglong offset, ulonglong increment,
   }
   if (last_value < *first_value) /* empty intersection, error */
   {
+    /*
+      When we have an empty intersection, it means that one or more
+      partitions may have a significantly different autoinc next value.
+      We should not fail here - it just means that we should try to
+      find a new reservation making use of the current *first_value
+      wbich should now be compatible with all partitions.
+    */
+    if (retry)
+    {
+      retry= FALSE;
+      last_value= ~ (ulonglong) 0;
+      release_auto_increment();
+      goto again;
+    }
+    /*
+      We should not get here.
+    */
+    sql_print_error("Failed to calculate auto_increment value for partition");
+    
     *first_value= ~(ulonglong)(0);
   }
   if (increment)                                // If not check for values

storage/innobase/handler/ha_innodb.cc

@@ -7328,10 +7328,10 @@ ha_innobase::get_auto_increment(
 			trx->n_autoinc_rows = 1;
 		}
   
-		*first_value = autoinc;
+		set_if_bigger(*first_value, autoinc);
 	/* Not in the middle of a mult-row INSERT. */
 	} else if (prebuilt->last_value == 0) {
-		*first_value = autoinc;
+		set_if_bigger(*first_value, autoinc);
 	}
   
 	*nb_reserved_values = trx->n_autoinc_rows;