zhengruifeng commented on code in PR #40603:
URL: https://github.com/apache/spark/pull/40603#discussion_r1159525799
##########
connector/connect/server/src/main/scala/org/apache/spark/sql/connect/service/SparkConnectStreamHandler.scala:
##########
@@ -49,6 +50,16 @@ class SparkConnectStreamHandler(responseObserver:
StreamObserver[ExecutePlanResp
.getOrCreateIsolatedSession(v.getUserContext.getUserId, v.getSessionId)
.session
session.withActive {
+
+ // Add debug information to the query execution so that the jobs are
traceable.
+ val debugString = v.toString
Review Comment:
> My guess is that you're submitting a very large Python UDF that requires
lots of heap space in the string
[this
one](https://github.com/apache/spark/blob/e81c2c895a66f00888198f615a1f11b410bb7475/python/pyspark/ml/torch/tests/test_distributor.py#L57-L122)
, it will be converted to a Pandas UDF, should be very large
I think it is also related to java version, since it throw OOM in Java8 but
works well in Java11.
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