zhengruifeng commented on code in PR #53849:
URL: https://github.com/apache/spark/pull/53849#discussion_r3301914873
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python/pyspark/sql/classic/dataframe.py:
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@@ -171,6 +171,11 @@ def stat(self) -> ParentDataFrameStatFunctions:
def toJSON(self, use_unicode: bool = True) -> "RDD[str]":
from pyspark.core.rdd import RDD
+ warnings.warn(
+ "The return type of DataFrame.toJSON will be changed from RDD to
DataFrame "
Review Comment:
we have a config spark.sql.pyspark.toJSON.returnDataFrame for it, but I
think we don't have an exact timeline now, maybe 5.0? @dbtsai @haoyangeng-db
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