echauchot commented on code in PR #24862:
URL: https://github.com/apache/beam/pull/24862#discussion_r1067848088


##########
runners/spark/3/src/main/java/org/apache/beam/runners/spark/structuredstreaming/translation/SparkSessionFactory.java:
##########
@@ -95,24 +122,37 @@ public static SparkSession 
getOrCreateSession(SparkStructuredStreamingPipelineOp
     if (options.getUseActiveSparkSession()) {
       return SparkSession.active();
     }
-    return sessionBuilder(options.getSparkMaster(), options.getAppName(), 
options.getFilesToStage())
-        .getOrCreate();
+    return sessionBuilder(options.getSparkMaster(), options).getOrCreate();
   }
 
   /** Creates Spark session builder with some optimizations for local mode, 
e.g. in tests. */
   public static SparkSession.Builder sessionBuilder(String master) {
-    return sessionBuilder(master, null, null);
+    return sessionBuilder(master, null);
   }
 
   private static SparkSession.Builder sessionBuilder(
-      String master, @Nullable String appName, @Nullable List<String> jars) {
-    SparkConf sparkConf = new SparkConf();
-    sparkConf.setMaster(master);
-    if (appName != null) {
-      sparkConf.setAppName(appName);
-    }
-    if (jars != null && !jars.isEmpty()) {
-      sparkConf.setJars(jars.toArray(new String[0]));
+      String master, @Nullable SparkStructuredStreamingPipelineOptions 
options) {
+
+    SparkConf sparkConf = new SparkConf().setIfMissing("spark.master", master);
+    master = sparkConf.get("spark.master"); // update to effective master

Review Comment:
   fair enough in that case



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