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  1. Spark
  2. SPARK-19509

GROUPING SETS throws NullPointerException when use an empty column

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.1.0
    • Fix Version/s: 2.0.3, 2.1.1
    • Component/s: SQL
    • Labels:
      None

      Description

      A simple case
      select count(1) from test group by e grouping sets(e)
      
      Schema of the test table
      scala> spark.sql("desc test").show()
      +--------+---------+-------+
      |col_name|data_type|comment|
      +--------+---------+-------+
      |       e|   string|   null|
      +--------+---------+-------+
      
      The column `e` is empty
      scala> spark.sql("select e from test").show()
      +----+
      |   e|
      +----+
      |null|
      |null|
      +----+
      
      Exception
      Driver stacktrace:
        at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1435)
        at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1423)
        at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1422)
        at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
        at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
        at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1422)
        at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:802)
        at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:802)
        at scala.Option.foreach(Option.scala:257)
        at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:802)
        at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.doOnReceive(DAGScheduler.scala:1650)
        at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1605)
        at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1594)
        at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
        at org.apache.spark.scheduler.DAGScheduler.runJob(DAGScheduler.scala:628)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:1918)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:1931)
        at org.apache.spark.SparkContext.runJob(SparkContext.scala:1944)
        at org.apache.spark.sql.execution.SparkPlan.executeTake(SparkPlan.scala:333)
        at org.apache.spark.sql.execution.CollectLimitExec.executeCollect(limit.scala:38)
        at org.apache.spark.sql.Dataset$$anonfun$org$apache$spark$sql$Dataset$$execute$1$1.apply(Dataset.scala:2371)
        at org.apache.spark.sql.execution.SQLExecution$.withNewExecutionId(SQLExecution.scala:57)
        at org.apache.spark.sql.Dataset.withNewExecutionId(Dataset.scala:2765)
        at org.apache.spark.sql.Dataset.org$apache$spark$sql$Dataset$$execute$1(Dataset.scala:2370)
        at org.apache.spark.sql.Dataset.org$apache$spark$sql$Dataset$$collect(Dataset.scala:2377)
        at org.apache.spark.sql.Dataset$$anonfun$head$1.apply(Dataset.scala:2113)
        at org.apache.spark.sql.Dataset$$anonfun$head$1.apply(Dataset.scala:2112)
        at org.apache.spark.sql.Dataset.withTypedCallback(Dataset.scala:2795)
        at org.apache.spark.sql.Dataset.head(Dataset.scala:2112)
        at org.apache.spark.sql.Dataset.take(Dataset.scala:2327)
        at org.apache.spark.sql.Dataset.showString(Dataset.scala:248)
        at org.apache.spark.sql.Dataset.show(Dataset.scala:636)
        at org.apache.spark.sql.Dataset.show(Dataset.scala:595)
        at org.apache.spark.sql.Dataset.show(Dataset.scala:604)
        ... 48 elided
      Caused by: java.lang.NullPointerException
        at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.agg_doAggregateWithKeys$(Unknown Source)
        at org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIterator.processNext(Unknown Source)
        at org.apache.spark.sql.execution.BufferedRowIterator.hasNext(BufferedRowIterator.java:43)
        at org.apache.spark.sql.execution.WholeStageCodegenExec$$anonfun$8$$anon$1.hasNext(WholeStageCodegenExec.scala:377)
        at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:408)
        at org.apache.spark.shuffle.sort.BypassMergeSortShuffleWriter.write(BypassMergeSortShuffleWriter.java:126)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:96)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:53)
        at org.apache.spark.scheduler.Task.run(Task.scala:99)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:282)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
      

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            • Assignee:
              stanzhai StanZhai
              Reporter:
              stanzhai StanZhai
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              Dates

              • Created:
                Updated:
                Resolved: