Pei-Lun Lee created SPARK-3371:
----------------------------------
Summary: Spark SQL: Renaming a function expression with group by
gives error
Key: SPARK-3371
URL: https://issues.apache.org/jira/browse/SPARK-3371
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.1.0
Reporter: Pei-Lun Lee
{code}
val sqlContext = new org.apache.spark.sql.SQLContext(sc)
val rdd = sc.parallelize(List("""{"foo":"bar"}"""))
sqlContext.jsonRDD(rdd).registerAsTable("t1")
sqlContext.registerFunction("len", (s: String) => s.length)
sqlContext.sql("select len(foo) as a, count(1) from t1 group by
len(foo)").collect()
{code}
running above code in spark-shell gives the following error
{noformat}
14/09/03 17:20:13 ERROR Executor: Exception in task 2.0 in stage 3.0 (TID 214)
org.apache.spark.sql.catalyst.errors.package$TreeNodeException: Binding
attribute, tree: foo#0
at
org.apache.spark.sql.catalyst.errors.package$.attachTree(package.scala:47)
at
org.apache.spark.sql.catalyst.expressions.BindReferences$$anonfun$bindReference$1.applyOrElse(BoundAttribute.scala:43)
at
org.apache.spark.sql.catalyst.expressions.BindReferences$$anonfun$bindReference$1.applyOrElse(BoundAttribute.scala:42)
at
org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:165)
at
org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$4$$anonfun$apply$2.apply(TreeNode.scala:201)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at
org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$4.apply(TreeNode.scala:199)
at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at
scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
at
scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
at
scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
at scala.collection.AbstractIterator.to(Iterator.scala:1157)
at
scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
at
scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
at scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
at
org.apache.spark.sql.catalyst.trees.TreeNode.transformChildrenDown(TreeNode.scala:212)
at
org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:168)
at
org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$4.apply(TreeNode.scala:183)
at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
{noformat}
remove "as a" in the query causes no error
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