[SPARK-28048] pyspark.sql.functions.explode will abondon the row which has a empty list column when applied to the column

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.1.1
• Component/s: PySpark
• Assignee: Unassigned
• Reporter: Ma Xinmin
• Created: 14/Jun/19 04:52
• Updated: 12/Dec/22 18:10
• Resolved: 14/Jun/19 09:56

Description

from pyspark.sql import Row
from pyspark.sql.functions import explode
eDF = spark.createDataFrame([Row(a=1, intlist=[1,2], mapfield={"a": "b"}), Row(a=2, intlist=[], mapfield={"a": "b"})])
eDF = eDF.withColumn('another', explode(eDF.intlist)).collect()
eDF

The `a=2` row is missing in the output