Fixed bug in federatedx patch that caused partition tests to fail.

Fixed that connection string is returned for partitioned federated tables.

mysql-test/r/partition_federated.result:
  Fixed error message
mysql-test/suite/federated/federated_partition.result:
  Added test to show that connection string is returned in 'show create'.
sql/ha_partition.cc:
  Fixed a set of bugs introduced by the last federated patch:
  - We can't allocate m_ordered_rec_buffer in memroot as it has to survive call to clear_handler_file()
sql/partition_element.h:
  Ensure that connect_string is properly initialized.
  (This caused crashed in partition tests)
sql/sql_partition.cc:
  Print CONNECTION option for federated partitioned tables

1 files changed, 4 insertions, 0 deletions

diff --git a/sql/partition_element.h b/sql/partition_element.h
index 2fe2bba74cd..2158063cfef 100644
--- a/sql/partition_element.h
+++ b/sql/partition_element.h
@@ -81,6 +81,8 @@ public:
     nodegroup_id(UNDEF_NODEGROUP), has_null_value(FALSE),
     signed_flag(FALSE), max_value(FALSE)
   {
+    connect_string.str= 0;
+    connect_string.length= 0;
   }
   partition_element(partition_element *part_elem)
   : part_max_rows(part_elem->part_max_rows),
@@ -95,6 +97,8 @@ public:
     nodegroup_id(part_elem->nodegroup_id),
     has_null_value(FALSE)
   {
+    connect_string.str= 0;
+    connect_string.length= 0;
   }
   ~partition_element() {}
 };