Merge mysql.com:/windows/Linux_space/MySQL/mysql-5.0

into  mysql.com:/windows/Linux_space/MySQL/mysql-5.1

mysql-test/t/ndb_update.test

@@ -29,6 +29,7 @@ UPDATE IGNORE t1 set pk1 = 4 where pk1 = 2;
 select * from t1 order by pk1;
 -- error 1062
 UPDATE t1 set pk1 = 1, c = 2 where pk1 = 4;
+UPDATE IGNORE t1 set pk1 = 1, c = 2 where pk1 = 4;
 select * from t1 order by pk1;
 UPDATE t1 set pk1 = pk1 + 10;
 select * from t1 order by pk1;

sql/ha_ndbcluster.cc

@@ -2758,6 +2758,21 @@ int ha_ndbcluster::update_row(const byte *old_data, byte *new_data)
   DBUG_ENTER("update_row");
   m_write_op= TRUE;
   
+  /*
+   * If IGNORE the ignore constraint violations on primary and unique keys
+   */
+  if (m_ignore_dup_key)
+  {
+    int peek_res= peek_indexed_rows(new_data);
+    
+    if (!peek_res) 
+    {
+      DBUG_RETURN(HA_ERR_FOUND_DUPP_KEY);
+    }
+    if (peek_res != HA_ERR_KEY_NOT_FOUND)
+      DBUG_RETURN(peek_res);
+  }
+
   statistic_increment(thd->status_var.ha_update_count, &LOCK_status);
   if (table->timestamp_field_type & TIMESTAMP_AUTO_SET_ON_UPDATE)
   {