orhankislal commented on code in PR #594:
URL: https://github.com/apache/madlib/pull/594#discussion_r1114953481


##########
src/ports/postgres/modules/graph/graph_utils.py_in:
##########
@@ -74,14 +74,18 @@ def validate_output_and_summary_tables(model_out_table, 
module_name,
                 "Graph WCC: Output table {0} already 
exists.".format(out_table))
 
 def validate_graph_coding(vertex_table, vertex_id, edge_table, edge_params,
-                          out_table, func_name, **kwargs):
+                          out_table, func_name, warm_start = False, **kwargs):
     """
     Validates graph tables (vertex and edge) as well as the output table.
     """
     _assert(out_table and out_table.strip().lower() not in ('null', ''),
-            "Graph {func_name}: Invalid output table name!".format(**locals()))
-    _assert(not table_exists(out_table),
-            "Graph {func_name}: Output table already 
exists!".format(**locals()))
+                "Graph {func_name}: Invalid output table 
name!".format(**locals()))
+    if warm_start:
+        _assert(table_exists(out_table),

Review Comment:
   We do it in the wcc specific function, this is generic graph utility.



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