[HWORKS-1565] Make sure the program exits after completion (#275)

Author: gibchikafa

utils/java/src/main/java/com/logicalclocks/utils/MainClass.java

@@ -115,13 +115,22 @@ public static void main(String[] args) throws Exception {
     }
     LOGGER.info("Hsfs utils write options: {}", writeOptions);
 
+    boolean success = false;
     try {
       if (op.equals("offline_fg_materialization") || op.equals("offline_fg_backfill")) {
         SparkEngine.getInstance().streamToHudiTable(streamFeatureGroup, writeOptions);
       }
+      success = true;
     } finally {
       LOGGER.info("Closing spark session...");
-      SparkEngine.getInstance().closeSparkSession();
+      try {
+        SparkEngine.getInstance().closeSparkSession();
+      } catch (Exception e) {
+        LOGGER.error("Error closing spark session", e);
+      }
+      if (!success) {
+        System.exit(1);
+      }
     }
     System.exit(0);
   }

utils/python/hsfs_utils.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import sys
 import os
 import argparse
 import json
@@ -285,6 +286,7 @@ def parse_isoformat_date(da: str) -> datetime:
     args = parser.parse_args()
     job_conf = read_job_conf(args.path)
 
+    success = False
     try:
         if args.op == "insert_fg":
             insert_fg(spark, job_conf)
@@ -300,6 +302,16 @@ def parse_isoformat_date(da: str) -> datetime:
             import_fg(job_conf)
         elif args.op == "run_feature_monitoring":
             run_feature_monitoring(job_conf)
+
+        success = True
     finally:
         if spark is not None:
-            spark.stop()
+            try:
+                spark.stop()
+            except Exception as e:
+                print(f"Error stopping spark session: {e}")
+        if not success:
+            sys.exit(1)
+
+    sys.exit(0)
+