xinrong-databricks commented on code in PR #36640:
URL: https://github.com/apache/spark/pull/36640#discussion_r880035876
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python/pyspark/sql/session.py:
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@@ -611,7 +611,7 @@ def _inferSchema(
:class:`pyspark.sql.types.StructType`
"""
first = rdd.first()
- if not first:
+ if first != 0 and not first:
Review Comment:
Even if we let it pass this if-else check, PySpark returns an empty
DataFrame as below
```py
>>> spark.createDataFrame(spark._sc.parallelize([[],[]])).show()
++
||
++
||
||
++
```
whereas Spark SQL returns a DataFrame where each row is an empty array.
Let me check the code paths further and adjust that. Thanks!
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