[jira] [Created] (SPARK-24165) UDF within when().otherwise() raises NullPointerException

["Jingxuan Wang (JIRA)" <ji...@apache.org>]

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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