gaogaotiantian commented on code in PR #52980:
URL: https://github.com/apache/spark/pull/52980#discussion_r2526170171


##########
python/pyspark/worker.py:
##########
@@ -3307,6 +3309,13 @@ def main(infile, outfile):
         if tracebackDumpIntervalSeconds is not None and 
int(tracebackDumpIntervalSeconds) > 0:
             
faulthandler.dump_traceback_later(int(tracebackDumpIntervalSeconds), 
repeat=True)
 
+        tzname = os.environ.get("SPARK_SESSION_LOCAL_TIMEZONE", None)

Review Comment:
   I'm not familiar with UDFs enough to answer this question. But is it 
possible that users use `TimestampType.from_internal()` in their udf? Or it's 
something we don't care. I think this only affects the cases where 
`from_internal()` is called.



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