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Post-merge fixes: merge MariaDB's fix for MDEV-5177 and MDEV-5555

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with Oracle's fix for Bug#17588348 by reverting Oracle's fix.
This commit is contained in:
Sergey Petrunya 2014-02-17 23:20:07 +04:00
parent b594e31b6b
commit fd9e34ffd7
1 changed files with 7 additions and 17 deletions
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24
sql/ha_partition.cc
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@ -7711,29 +7711,19 @@ uint ha_partition::min_record_length(uint options) const
int ha_partition::cmp_ref(const uchar *ref1, const uchar *ref2)
{
int cmp;
uint part_id;
my_ptrdiff_t diff1, diff2;
handler *file;
DBUG_ENTER("ha_partition::cmp_ref");
cmp = m_file[0]->cmp_ref((ref1 + PARTITION_BYTES_IN_POS),
(ref2 + PARTITION_BYTES_IN_POS));
if (cmp)
DBUG_RETURN(cmp);
if ((ref1[0] == ref2[0]) && (ref1[1] == ref2[1]))
{
/* This means that the references are same and are in same partition.*/
DBUG_RETURN(0);
part_id= uint2korr(ref1);
file= m_file[part_id];
DBUG_ASSERT(part_id < m_tot_parts);
DBUG_RETURN(file->cmp_ref((ref1 + PARTITION_BYTES_IN_POS),
(ref2 + PARTITION_BYTES_IN_POS)));
}
/*
In Innodb we compare with either primary key value or global DB_ROW_ID so
it is not possible that the two references are equal and are in different
partitions, but in myisam it is possible since we are comparing offsets.
Remove this assert if DB_ROW_ID is changed to be per partition.
*/
DBUG_ASSERT(!m_innodb);
diff1= ref2[1] - ref1[1];
diff2= ref2[0] - ref1[0];
if (diff1 > 0)