HyukjinKwon commented on a change in pull request #34757:
URL: https://github.com/apache/spark/pull/34757#discussion_r769245766
##########
File path: python/pyspark/sql/session.py
##########
@@ -304,8 +306,15 @@ def __init__(
and not
self._jvm.SparkSession.getDefaultSession().get().sparkContext().isStopped()
):
jsparkSession =
self._jvm.SparkSession.getDefaultSession().get()
+ getattr(getattr(self._jvm, "SparkSession$"),
"MODULE$").applyModifiableSettings(
Review comment:
@AngersZhuuuu, this actually shows a lot of new warnings (see also
https://github.com/apache/spark/pull/34893). Another reproducer:
```bash
./bin/spark-shell --conf spark.executor.memory=8g --conf
spark.driver.memory=8g
```
```python
>>> from pyspark.sql.functions import udf
>>> udf(lambda x: x)("a")
21/12/15 14:03:15 WARN SparkSession: Using an existing SparkSession; the
static sql configurations will not take effect.
Column<'<lambda>(a)'>
```
There are too many places like this:
```python
ml/util.py: self._sparkSession =
SparkSession.builder.getOrCreate()
sql/column.py: spark = SparkSession.builder.getOrCreate()
sql/context.py: sparkSession = SparkSession.builder.getOrCreate()
sql/readwriter.py: spark = SparkSession.builder.getOrCreate()
sql/readwriter.py: spark = SparkSession.builder.getOrCreate()
sql/session.py: return SparkSession.builder.getOrCreate()
sql/session.py: return SparkSession.builder.getOrCreate()
sql/streaming.py: spark = SparkSession.builder.getOrCreate()
sql/streaming.py: spark = SparkSession.builder.getOrCreate()
sql/udf.py: spark = SparkSession.builder.getOrCreate()
```
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