[GitHub] [spark] AngersZhuuuu commented on a change in pull request #33934: [SPARK-36691][PYSPARK] PythonRunner failed should pass error message to ApplicationMaster too

[GitBox <gi...@apache.org>]

AngersZhuuuu commented on a change in pull request #33934:
URL: https://github.com/apache/spark/pull/33934#discussion_r704101357



##########
File path: core/src/main/scala/org/apache/spark/deploy/PythonRunner.scala
##########
@@ -92,15 +92,19 @@ object PythonRunner {
       // see https://github.com/numpy/numpy/issues/10455
       sparkConf.getOption("spark.driver.cores").foreach(env.put("OMP_NUM_THREADS", _))
     }
-    builder.redirectErrorStream(true) // Ugly but needed for stdout and stderr to synchronize
     try {
       val process = builder.start()
 
+      val stderrBuffer = new CircularBuffer(2048)
+      new RedirectThread(
+        process.getErrorStream,
+        stderrBuffer,
+        "Thread-ScriptTransformation-STDERR-Consumer").start()

Review comment:
       > Why is it ScriptTransform?
   
   Updated to PythonRunner




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