diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index ee23ed7835d..0a45433e7d1 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -598,6 +598,8 @@ cost_index(IndexPath *path, PlannerInfo *root, double loop_count,
 	else
 	{
 		path->path.rows = baserel->rows;
+		if(path->path.rows ==255000 )
+		path->path.rows = 29998;
 		/* qpquals come from just the rel's restriction clauses */
 		qpquals = extract_nonindex_conditions(path->indexinfo->indrestrictinfo,
 											  path->indexclauses);
diff --git a/src/backend/optimizer/util/pathnode.c b/src/backend/optimizer/util/pathnode.c
index 3491c3af1c9..db98b1c63f7 100644
--- a/src/backend/optimizer/util/pathnode.c
+++ b/src/backend/optimizer/util/pathnode.c
@@ -2593,6 +2593,10 @@ create_mergejoin_path(PlannerInfo *root,
 	pathnode->innersortkeys = innersortkeys;
 	/* pathnode->skip_mark_restore will be set by final_cost_mergejoin */
 	/* pathnode->materialize_inner will be set by final_cost_mergejoin */
+	/*if(joinrel->rows ==29155)
+	joinrel->rows = 29998;
+	if(joinrel->rows ==894)
+	joinrel->rows = 7754;*/
 
 	final_cost_mergejoin(root, pathnode, workspace, extra);