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author | Sergei Petrunia <psergey@askmonty.org> | 2016-02-01 19:36:22 +0300 |
---|---|---|
committer | Sergei Petrunia <psergey@askmonty.org> | 2016-02-01 19:36:22 +0300 |
commit | 74f15e2a7f647648bb19bc7c2583c36ccd0d67fc (patch) | |
tree | 12086f5113edeb5d0729f5cc9c26c4be6240041c | |
parent | a4ff37e912ee50d2ccee7fa50a361f9990ac78b4 (diff) | |
download | mariadb-git-74f15e2a7f647648bb19bc7c2583c36ccd0d67fc.tar.gz |
MDEV-9505: Valgrind failure in SEL_ARG::store_min,find_used_partitions
create_partition_index_description() had wrong logic to calculate
length of the key value buffer that is used by the range optimizer.
For some reason it used MAX(partitioning_columns_len,
subpartitioning_columns_len) while it should use SUM of these values.
-rw-r--r-- | mysql-test/r/partition_pruning.result | 18 | ||||
-rw-r--r-- | mysql-test/t/partition_pruning.test | 19 | ||||
-rw-r--r-- | sql/opt_range.cc | 16 |
3 files changed, 42 insertions, 11 deletions
diff --git a/mysql-test/r/partition_pruning.result b/mysql-test/r/partition_pruning.result index e52c2c7d886..65b788a7d1b 100644 --- a/mysql-test/r/partition_pruning.result +++ b/mysql-test/r/partition_pruning.result @@ -3467,3 +3467,21 @@ id select_type table partitions type possible_keys key key_len ref rows Extra 1 PRIMARY t2 p_1000 ref PRIMARY PRIMARY 8 const 2 Using index 1 PRIMARY t1 p_1000 ALL PRIMARY NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) drop table t1,t2; +# +# MDEV-9505: Valgrind failure in SEL_ARG::store_min,find_used_partitions,... +# +create table t1 (a int, b char(10), c varchar(5), d int) +partition by range columns(a,b,c) +subpartition by key (c,d) +subpartitions 3 +( partition p0 values less than (1,'abc','abc'), +partition p1 values less than (2,'abc','abc'), +partition p2 values less than (3,'abc','abc'), +partition p3 values less than (4,'abc','abc') +); +insert into t1 values (1,'a','b',1),(2,'a','b',2),(3,'a','b',3); +select * from t1 where (a = 1 AND b < 'd' AND (c = 'b' OR (c = 'c' AND d = 1)) OR +(a = 1 AND b >= 'a' AND (c = 'c' OR (c = 'd' AND d = 2)))); +a b c d +1 a b 1 +drop table t1; diff --git a/mysql-test/t/partition_pruning.test b/mysql-test/t/partition_pruning.test index 06ef99e1e70..9d72e9c0d01 100644 --- a/mysql-test/t/partition_pruning.test +++ b/mysql-test/t/partition_pruning.test @@ -1517,3 +1517,22 @@ and dept_id in (select dept_id from t2 where COMPANY_ID = 1000); drop table t1,t2; +--echo # +--echo # MDEV-9505: Valgrind failure in SEL_ARG::store_min,find_used_partitions,... +--echo # +create table t1 (a int, b char(10), c varchar(5), d int) +partition by range columns(a,b,c) +subpartition by key (c,d) +subpartitions 3 +( partition p0 values less than (1,'abc','abc'), + partition p1 values less than (2,'abc','abc'), + partition p2 values less than (3,'abc','abc'), + partition p3 values less than (4,'abc','abc') +); + +insert into t1 values (1,'a','b',1),(2,'a','b',2),(3,'a','b',3); +select * from t1 where (a = 1 AND b < 'd' AND (c = 'b' OR (c = 'c' AND d = 1)) OR + (a = 1 AND b >= 'a' AND (c = 'c' OR (c = 'd' AND d = 2)))); +drop table t1; + + diff --git a/sql/opt_range.cc b/sql/opt_range.cc index 6b72f9c336b..f051ed07a7e 100644 --- a/sql/opt_range.cc +++ b/sql/opt_range.cc @@ -4931,15 +4931,14 @@ static bool create_partition_index_description(PART_PRUNE_PARAM *ppar) Field **field= (ppar->part_fields)? part_info->part_field_array : part_info->subpart_field_array; bool in_subpart_fields= FALSE; - uint max_key_len= 0; - uint cur_key_len= 0; + uint total_key_len= 0; for (uint part= 0; part < total_parts; part++, key_part++) { key_part->key= 0; key_part->part= part; key_part->length= (uint16)(*field)->key_length(); key_part->store_length= (uint16)get_partition_field_store_length(*field); - cur_key_len += key_part->store_length; + total_key_len += key_part->store_length; DBUG_PRINT("info", ("part %u length %u store_length %u", part, key_part->length, key_part->store_length)); @@ -4965,18 +4964,13 @@ static bool create_partition_index_description(PART_PRUNE_PARAM *ppar) { field= part_info->subpart_field_array; in_subpart_fields= TRUE; - max_key_len= cur_key_len; - cur_key_len= 0; } } range_par->key_parts_end= key_part; - if (cur_key_len > max_key_len) - max_key_len= cur_key_len; - - max_key_len++; /* Take into account the "+1" in QUICK_RANGE::QUICK_RANGE */ - if (!(range_par->min_key= (uchar*)alloc_root(alloc,max_key_len)) || - !(range_par->max_key= (uchar*)alloc_root(alloc,max_key_len))) + total_key_len++; /* Take into account the "+1" in QUICK_RANGE::QUICK_RANGE */ + if (!(range_par->min_key= (uchar*)alloc_root(alloc,total_key_len)) || + !(range_par->max_key= (uchar*)alloc_root(alloc,total_key_len))) { return true; } |