Index: sql/ha_partition.cc
===================================================================
--- sql/ha_partition.cc	(revision 1)
+++ sql/ha_partition.cc	(working copy)
@@ -4227,7 +4227,26 @@
   DBUG_RETURN(0);
 }
 
+int ha_partition::discard_or_import_tablespace(my_bool discard)
+{
+  int error;
+  handler **file;
+  DBUG_ENTER("ha_partition::discard_or_import_tablespace");
 
+  /*
+    TRUNCATE also means resetting auto_increment. Hence, reset
+    it so that it will be initialized again at the next use.
+  */
+
+  file= m_file;
+  do
+  {
+    if ((error= (*file)->discard_or_import_tablespace(discard)))
+      DBUG_RETURN(error);
+  } while (*(++file));
+  DBUG_RETURN(0);
+}
+
 /**
   Manually truncate the table.
 
Index: sql/ha_partition.h
===================================================================
--- sql/ha_partition.h	(revision 1)
+++ sql/ha_partition.h	(working copy)
@@ -1158,6 +1158,7 @@
                                             bool commit);
     virtual void notify_table_changed();
 
+    virtual int discard_or_import_tablespace(my_bool discard);
   /*
     -------------------------------------------------------------------------
     MODULE tablespace support