Commit cb3a82a0 authored by unknown's avatar unknown
Browse files

BUG#20852: Using update with full table scan causes mysqld to enter an eternal loop 


mysql-test/r/partition_innodb.result:
  New test case
mysql-test/t/partition_innodb.test:
  New test case
sql/ha_partition.cc:
  Two more handler interface variables not taken care of
parent 16c54768

mysql-test/r/partition_innodb.result

+11 −0
Original line number Diff line number Diff line
@@ -107,3 +107,14 @@ select * from t1 where id = 'aaa'; 
id

aaa

drop table t1;

create table t1 (a int, b int, primary key (b,a))

engine = innodb

partition by hash (a);

insert into t1 values (0, 0);

insert into t1 values (1, 0);

update t1 set b = b + 1 where a = 1;

select * from t1;

a	b

0	0

1	1

drop table t1;

mysql-test/t/partition_innodb.test

+13 −0
Original line number Diff line number Diff line
@@ -78,3 +78,16 @@ select * from t1 where id = 'a'; 
select * from t1 where id = 'aa';

select * from t1 where id = 'aaa';

drop table t1;



#

# Bug #20852 Partitions: Crash if hash innodb, composite primary key

#

create table t1 (a int, b int, primary key (b,a))

engine = innodb

partition by hash (a);

insert into t1 values (0, 0);

insert into t1 values (1, 0);

update t1 set b = b + 1 where a = 1;

select * from t1;

drop table t1;

sql/ha_partition.cc

+2 −1
Original line number Diff line number Diff line
@@ -2229,7 +2229,8 @@ int ha_partition::open(const char *name, int mode, uint test_if_locked) 
  m_table_flags&= ~(HA_CAN_GEOMETRY | HA_CAN_FULLTEXT | HA_DUPLICATE_POS |

                    HA_CAN_SQL_HANDLER | HA_CAN_INSERT_DELAYED);

  m_table_flags|= HA_FILE_BASED | HA_REC_NOT_IN_SEQ;



  key_used_on_scan= m_file[0]->key_used_on_scan;

  implicit_emptied= m_file[0]->implicit_emptied;

  /*

    Add 2 bytes for partition id in position ref length.

    ref_length=max_in_all_partitions(ref_length) + PARTITION_BYTES_IN_POS