robreeves commented on code in PR #53657:
URL: https://github.com/apache/spark/pull/53657#discussion_r2679233885


##########
core/src/main/scala/org/apache/spark/ui/jobs/AllJobsPage.scala:
##########
@@ -342,6 +343,16 @@ private[ui] class AllJobsPage(parent: JobsTab, store: 
AppStatusStore) extends We
               }
             }
           </li>
+          {
+            exitCode match {
+              case Some(code) if code != 0 =>
+                <li>
+                  <strong>Final Status:</strong>
+                  {s"Failure (exit code: $code)"}

Review Comment:
   I did that originally, but found there are some cases where the application 
doesn't succeed but sets the exit code as 0. For example, a python app that 
throws an exception in the driver and running it with spark-submit locally. I 
was worried this is misleading and think we need to improve how exit codes are 
set before showing success. For the non-zero exit code it is higher confidence 
and can be shown.
   
   For example this script:
   ```python
   from pyspark.sql import SparkSession
   
   spark = SparkSession.builder \
       .appName("CrashDriver") \
       .getOrCreate()
   
   data = [("Alice", 1), ("Bob", 2)]
   df = spark.createDataFrame(data, ["name", "id"])
   
   raise RuntimeError("Intentional driver crash!")
   
   spark.stop()
   ```
   
   Here is the SparkListenerApplicationEnd event:
   ```json
   
{"Event":"SparkListenerApplicationEnd","Timestamp":1768108673350,"ExitCode":0}
   ```



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