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https://issues.apache.org/jira/browse/SPARK-17849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-17849:
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Assignee: (was: Apache Spark)
> grouping set throws NPE
> -----------------------
>
> Key: SPARK-17849
> URL: https://issues.apache.org/jira/browse/SPARK-17849
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0, 2.0.1
> Reporter: Yang Wang
>
> spark sql grouping sets throws NullPointerException.
> This problem can be recreated using the following lines of code:
> case class point(a:String, b:String, c:String)
> val data = Seq(
> point("1","2","3"),
> point("4","5","6"),
> point("7","8","9")
> )
> sc.parallelize(data).toDF().registerTempTable("table")
> spark.sql("select a, b, count(c) from table group by a, b GROUPING SETS (())
> ").show()
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