zhengruifeng commented on code in PR #37002:
URL: https://github.com/apache/spark/pull/37002#discussion_r913304664


##########
python/run-tests.py:
##########
@@ -96,7 +96,8 @@ def run_individual_python_test(target_dir, test_name, 
pyspark_python):
     os.mkdir(metastore_dir)
 
     # Also override the JVM's temp directory by setting driver and executor 
options.
-    java_options = "-Djava.io.tmpdir={0} 
-Dio.netty.tryReflectionSetAccessible=true".format(tmp_dir)
+    java_options = "-Djava.io.tmpdir={0}".format(tmp_dir)
+    java_options = java_options + " -Dio.netty.tryReflectionSetAccessible=true 
-Xss16M"

Review Comment:
   also cc @HyukjinKwon @WeichenXu123 since this PR change the java option of 
tests in pySpark and sparkR.



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