Jingxuan Wang created SPARK-24165:
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Summary: UDF within when().otherwise() raises NullPointerException
Key: SPARK-24165
URL: https://issues.apache.org/jira/browse/SPARK-24165
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.0
Reporter: Jingxuan Wang
I have a UDF which takes java.sql.Timestamp and String as input column type and
returns an Array of (Seq[case class], Double) as output. Since some of values
in input columns can be nullable, I put the UDF inside a when($input.isNull,
null).otherwise(UDF) filter. Such function works well when I test in spark
shell. But running as a scala jar in spark-submit with yarn cluster mode, it
raised NullPointerException which points to the UDF function. If I remove the
when().otherwsie() condition, but put null check inside the UDF, the function
works without issue in spark-submit.
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