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https://issues.apache.org/jira/browse/SPARK-15029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-15029:
------------------------------------
Assignee: Apache Spark
> Bad error message for two generators in the project clause
> ----------------------------------------------------------
>
> Key: SPARK-15029
> URL: https://issues.apache.org/jira/browse/SPARK-15029
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Reynold Xin
> Assignee: Apache Spark
>
> {code}
> scala> spark.range(1000).map(i => (Array[Long](i),
> Array[Long](i))).selectExpr("explode(_1)", "explode(_2)").explain(true)
> org.apache.spark.sql.AnalysisException: Only one generator allowed per select
> but Generate and and Explode found.;
> at
> org.apache.spark.sql.catalyst.analysis.CheckAnalysis$class.failAnalysis(CheckAnalysis.scala:39)
> at
> org.apache.spark.sql.catalyst.analysis.Analyzer.failAnalysis(Analyzer.scala:54)
> at
> org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveGenerate$$anonfun$apply$21$$anonfun$53.apply(Analyzer.scala:1275)
> at
> org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveGenerate$$anonfun$apply$21$$anonfun$53.apply(Analyzer.scala:1272)
> at
> scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
> at
> scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
> at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
> at scala.collection.AbstractTraversable.flatMap(Traversable.scala:104)
> {code}
> It's confusing to call one "Generator" and the other "Explode". There is also
> two "and"s.
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