Duy-Minh TRAN created SPARK-13719: ------------------------------------- Summary: Bad JSON record raises java.lang.ClassCastException Key: SPARK-13719 URL: https://issues.apache.org/jira/browse/SPARK-13719 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 1.6.0, 1.5.2 Environment: OS X, Linux Reporter: Duy-Minh TRAN
I have defined a JSON schema, using org.apache.spark.sql.types.StructType, that expects this kind of record : {noformat} { "request": { "user": { "id": 123 } } } {noformat} There's a bad record in my dataset, that defines field "user" as an array, instead of a JSON object : {noformat} { "request": { "user": [] } } {noformat} The following exception is raised because of that bad record : {noformat} Exception in thread "main" org.apache.spark.SparkException: Job aborted due to stage failure: Task 7 in stage 0.0 failed 4 times, most recent failure: Lost task 7.3 in stage 0.0 (TID 10, 192.168.1.170): java.lang.ClassCastException: org.apache.spark.sql.types.GenericArrayData cannot be cast to org.apache.spark.sql.catalyst.InternalRow at org.apache.spark.sql.catalyst.expressions.BaseGenericInternalRow$class.getStruct(rows.scala:50) at org.apache.spark.sql.catalyst.expressions.GenericMutableRow.getStruct(rows.scala:247) at org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificPredicate.eval(Unknown Source) at org.apache.spark.sql.catalyst.expressions.codegen.GeneratePredicate$$anonfun$create$2.apply(GeneratePredicate.scala:67) at org.apache.spark.sql.catalyst.expressions.codegen.GeneratePredicate$$anonfun$create$2.apply(GeneratePredicate.scala:67) at org.apache.spark.sql.execution.Filter$$anonfun$4$$anonfun$apply$4.apply(basicOperators.scala:117) at org.apache.spark.sql.execution.Filter$$anonfun$4$$anonfun$apply$4.apply(basicOperators.scala:115) at scala.collection.Iterator$$anon$14.hasNext(Iterator.scala:390) at scala.collection.Iterator$$anon$11.hasNext(Iterator.scala:327) at org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1.org$apache$spark$sql$execution$aggregate$TungstenAggregate$$anonfun$$executePartition$1(TungstenAggregate.scala:97) at org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:119) at org.apache.spark.sql.execution.aggregate.TungstenAggregate$$anonfun$doExecute$1$$anonfun$2.apply(TungstenAggregate.scala:119) at org.apache.spark.rdd.MapPartitionsWithPreparationRDD.compute(MapPartitionsWithPreparationRDD.scala:64) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300) at org.apache.spark.rdd.RDD.iterator(RDD.scala:264) at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:300) at org.apache.spark.rdd.RDD.iterator(RDD.scala:264) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:73) at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:41) at org.apache.spark.scheduler.Task.run(Task.scala:88) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:214) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) {noformat} Here's a code snippet that reproduces the exception : {noformat} import org.apache.spark.SparkContext import org.apache.spark.rdd.RDD import org.apache.spark.sql.{SQLContext, DataFrame} import org.apache.spark.sql.hive.HiveContext import org.apache.spark.sql.types.{StringType, StructField, StructType} object Snippet { def main(args : Array[String]): Unit = { val sc = new SparkContext() implicit val sqlContext = new HiveContext(sc) val rdd: RDD[String] = sc.parallelize(Seq(badRecord)) val df: DataFrame = sqlContext.read.schema(schema).json(rdd) import sqlContext.implicits._ df.select("request.user.id") .filter($"id".isNotNull) .count() } val badRecord = s"""{ | "request": { | "user": [] | } |}""".stripMargin.replaceAll("\n", " ") // Convert the multiline string to a signe line string val schema = StructType( StructField("request", StructType( StructField("user", StructType( StructField("id", StringType) :: Nil )) :: Nil )) :: Nil) } {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org