squito commented on a change in pull request #24898: [SPARK-22340][PYTHON] Add a mode to pin Python thread into JVM's URL: https://github.com/apache/spark/pull/24898#discussion_r329843402
########## File path: python/pyspark/ml/tests/test_wrapper.py ########## @@ -28,6 +29,11 @@ class JavaWrapperMemoryTests(SparkSessionTestCase): + @unittest.skipIf( + os.environ.get("PYSPARK_PIN_THREAD", "false").lower() == "true", + "When the thread is pinned between Python and JVM, detaching seems not " + "working. This is potentially a bug in Py4J and SPARK-18630 can be persistent when " + "PYSPARK_PIN_THREAD is enabled, skipping for now.") Review comment: hmm, ok maybe take back my previous comment about thinking pinned mode is OK. This sounds like a major problem. Long-running job-server style deployments seem like cases where you'd want the advantage of this feature, but also where not having proper GC would be a huge problem. Have you had a chance to look at this anymore, or ask the py4j community about it? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org