Aggarwal-Raghav commented on code in PR #444:
URL: https://github.com/apache/tez/pull/444#discussion_r2548993387


##########
tez-tools/counter-diff/counter-diff.py:
##########
@@ -47,28 +52,33 @@ def diff(file1, file2):
        # also in dag.json data is inside "dag" root node
        file1_using_dag_json = True
        dag_json_file1 = os.path.join(file1_dir, "dag.json")
-       if os.path.isfile(dag_json_file1) == False:
+       if not os.path.isfile(dag_json_file1):
                file1_using_dag_json = False
                dag_json_file1 = os.path.join(file1_dir, "TEZ_DAG")
-               if os.path.isfile(dag_json_file1) == False:
-                       print "Unable to find dag.json/TEZ_DAG file inside the 
archive " + file1
-                       exit()
+               if not os.path.isfile(dag_json_file1):
+                       print("Unable to find dag.json/TEZ_DAG file inside the 
archive " + file1)
+                       sys.exit()
 
        file2_using_dag_json = True
        dag_json_file2 = os.path.join(file2_dir, "dag.json")
-       if os.path.isfile(dag_json_file2) == False:
+       if not os.path.isfile(dag_json_file2):
                file2_using_dag_json = False
                dag_json_file2 = os.path.join(file2_dir, "TEZ_DAG")
-               if os.path.isfile(dag_json_file2) == False:
-                       print "Unable to find dag.json/TEZ_DAG file inside the 
archive " + file1
-                       exit()
+               if not os.path.isfile(dag_json_file2):
+                       print("Unable to find dag.json/TEZ_DAG file inside the 
archive " + file1)
+                       sys.exit()
 
        # populate diff table
        difftable = {}
        with open(dag_json_file1) as data_file:
                file1_dag_json = json.load(data_file)["dag"] if 
file1_using_dag_json else json.load(data_file)
-               counters = file1_dag_json['otherinfo']['counters']
-               for group in counters['counterGroups']:

Review Comment:
   Added safe check because of such errors
   <img width="461" height="413" alt="Image" 
src="https://github.com/user-attachments/assets/82922ada-d28c-47b8-bbfb-bba5597963b6";
 />



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