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  1. Spark
  2. SPARK-18300

ClassCastException during count distinct

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.1
    • Fix Version/s: 2.0.3, 2.1.0
    • Component/s: SQL
    • Labels:

      Description

      While trying to reproduce SPARK-18172 in SQL, I found the following SQL query fails in Spark 2.0.1 (via spark-beeline) with a CassCastException:

      select count(distinct b), count(distinct b, c) from (select 1 as a, 2 as b, 3 as c) group by a;
      

      Selecting either of the two counts on their own runs fine, it is only when both are selected in the same query that it fails. I also tried the same query in pyspark:

      spark.sql('select count(distinct b) as x, count(distinct b, c) as y from (select 1 as a, 2 as b, 3 as c) group by a').show()
      

      And get the same error, with a full stack trace:

      : java.lang.ClassCastException: org.apache.spark.sql.catalyst.expressions.Literal cannot be cast to org.apache.spark.sql.catalyst.expressions.Attribute
      	at org.apache.spark.sql.types.StructType$$anonfun$fromAttributes$1.apply(StructType.scala:388)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
      	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.AbstractTraversable.map(Traversable.scala:104)
      	at org.apache.spark.sql.types.StructType$.fromAttributes(StructType.scala:388)
      	at org.apache.spark.sql.catalyst.plans.QueryPlan.schema$lzycompute(QueryPlan.scala:242)
      	at org.apache.spark.sql.catalyst.plans.QueryPlan.schema(QueryPlan.scala:242)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$10.apply(WholeStageCodegenExec.scala:454)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$10.apply(WholeStageCodegenExec.scala:454)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.supportCodegen(WholeStageCodegenExec.scala:454)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:482)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter(WholeStageCodegenExec.scala:469)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:483)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter(WholeStageCodegenExec.scala:469)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter$1.apply(WholeStageCodegenExec.scala:471)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertInputAdapter(WholeStageCodegenExec.scala:471)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:483)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages$$anonfun$org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen$2.apply(WholeStageCodegenExec.scala:485)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
      	at scala.collection.immutable.List.foreach(List.scala:381)
      	at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
      	at scala.collection.immutable.List.map(List.scala:285)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.org$apache$spark$sql$execution$CollapseCodegenStages$$insertWholeStageCodegen(WholeStageCodegenExec.scala:485)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.apply(WholeStageCodegenExec.scala:490)
      	at org.apache.spark.sql.execution.CollapseCodegenStages.apply(WholeStageCodegenExec.scala:430)
      	at org.apache.spark.sql.execution.QueryExecution$$anonfun$prepareForExecution$1.apply(QueryExecution.scala:93)
      	at org.apache.spark.sql.execution.QueryExecution$$anonfun$prepareForExecution$1.apply(QueryExecution.scala:93)
      	at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:124)
      	at scala.collection.immutable.List.foldLeft(List.scala:84)
      	at org.apache.spark.sql.execution.QueryExecution.prepareForExecution(QueryExecution.scala:93)
      	at org.apache.spark.sql.execution.QueryExecution.executedPlan$lzycompute(QueryExecution.scala:83)
      	at org.apache.spark.sql.execution.QueryExecution.executedPlan(QueryExecution.scala:83)
      	at org.apache.spark.sql.Dataset.withTypedCallback(Dataset.scala:2572)
      	at org.apache.spark.sql.Dataset.head(Dataset.scala:1934)
      	at org.apache.spark.sql.Dataset.take(Dataset.scala:2149)
      	at org.apache.spark.sql.Dataset.showString(Dataset.scala:239)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:483)
      	at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:237)
      	at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
      	at py4j.Gateway.invoke(Gateway.java:280)
      	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
      	at py4j.commands.CallCommand.execute(CallCommand.java:79)
      	at py4j.GatewayConnection.run(GatewayConnection.java:214)
      	at java.lang.Thread.run(Thread.java:745)
      

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              • Assignee:
                hvanhovell Herman van Hövell
                Reporter:
                emlyn Emlyn Corrin
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                • Created:
                  Updated:
                  Resolved: