Michael Armbrust created SPARK-12696:
----------------------------------------
Summary: Dataset serialization error
Key: SPARK-12696
URL: https://issues.apache.org/jira/browse/SPARK-12696
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.6.0
Reporter: Michael Armbrust
Assignee: Michael Armbrust
input snapshot
{code}
{
"count": "string",
"name": [{
"addr_no": "string",
"dais_id": "string",
"display_name": "string",
"first_name": "string",
"full_name": "string",
"last_name": "string",
"r_id": "string",
"reprint": "string",
"role": "string",
"seq_no": "string",
"suffix": "string",
"wos_standard": "string"
}]
}
{code}
Case classes:
{code}
case class listType1(addr_no:String, dais_id:String, display_name:String,
first_name:String, full_name:String, last_name:String, r_id:String,
reprint:String, role:String, seq_no:String, suffix:String, wos_standard:String)
case class DatasetType1(count:String, name:Array[listType1])
{code}
Schema:
{code}
root
|-- count: string (nullable = true)
|-- name: array (nullable = true)
| |-- element: struct (containsNull = true)
| | |-- addr_no: string (nullable = true)
| | |-- dais_id: string (nullable = true)
| | |-- display_name: string (nullable = true)
| | |-- first_name: string (nullable = true)
| | |-- full_name: string (nullable = true)
| | |-- last_name: string (nullable = true)
| | |-- r_id: string (nullable = true)
| | |-- reprint: string (nullable = true)
| | |-- role: string (nullable = true)
| | |-- seq_no: string (nullable = true)
| | |-- suffix: string (nullable = true)
| | |-- wos_standard: string (nullable = true)
{code}
Scala code:
{code}
import sqlContext.implicits._
val ds = df.as[DatasetType1]
//Taking first() works fine
println(ds.first().count)
//map() then first throws exception
println(ds.map(x => x.count).first())
{code}
{code}
Exception in thread "main" org.apache.spark.SparkException: Task not
serializable
at
org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:304)
at
org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:294)
at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:122)
at org.apache.spark.SparkContext.clean(SparkContext.scala:2055)
at org.apache.spark.SparkContext.runJob(SparkContext.scala:1857)
at org.apache.spark.SparkContext.runJob(SparkContext.scala:1929)
at org.apache.spark.rdd.RDD$$anonfun$collect$1.apply(RDD.scala:927)
at
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:150)
at
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:111)
at org.apache.spark.rdd.RDD.withScope(RDD.scala:316)
at org.apache.spark.rdd.RDD.collect(RDD.scala:926)
at org.apache.spark.sql.Dataset.collect(Dataset.scala:668)
at main.main$.testAsterixRDDWithSparkSQL(main.scala:63)
at main.main$.main(main.scala:70)
at main.main.main(main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
Caused by: java.io.NotSerializableException:
scala.reflect.internal.Symbols$PackageClassSymbol
Serialization stack:
- object not serializable (class:
scala.reflect.internal.Symbols$PackageClassSymbol, value: package main)
- field (class: scala.reflect.internal.Types$ThisType, name: sym, type:
class scala.reflect.internal.Symbols$Symbol)
- object (class scala.reflect.internal.Types$UniqueThisType, main.type)
- field (class: scala.reflect.internal.Types$TypeRef, name: pre, type:
class scala.reflect.internal.Types$Type)
- object (class scala.reflect.internal.Types$TypeRef$$anon$6,
main.listType1)
- field (class:
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$constructorFor$2,
name: elementType$1, type: class scala.reflect.api.Types$TypeApi)
- object (class
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$constructorFor$2,
<function0>)
- field (class:
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$constructorFor$2$$anonfun$apply$1,
name: $outer, type: class
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$constructorFor$2)
- object (class
org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$org$apache$spark$sql$catalyst$ScalaReflection$$constructorFor$2$$anonfun$apply$1,
<function1>)
- field (class: org.apache.spark.sql.catalyst.expressions.MapObjects,
name: function, type: interface scala.Function1)
- object (class org.apache.spark.sql.catalyst.expressions.MapObjects,
mapobjects(<function1>,cast(name#1 as
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>),StructField(display_name,StringType,true),StructField(first_name,StringType,true),StructField(full_name,StringType,true),StructField(reprint,StringType,true),StructField(role,StringType,true),StructField(wos_standard,StringType,true),StructField(last_name,StringType,true),StructField(dais_id,StringType,true),StructField(seq_no,StringType,true),StructField(suffix,StringType,true),StructField(r_id,StringType,true),StructField(addr_no,StringType,true)))
- field (class: org.apache.spark.sql.catalyst.expressions.Invoke, name:
targetObject, type: class org.apache.spark.sql.catalyst.expressions.Expression)
- object (class org.apache.spark.sql.catalyst.expressions.Invoke,
invoke(mapobjects(<function1>,cast(name#1 as
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>),StructField(display_name,StringType,true),StructField(first_name,StringType,true),StructField(full_name,StringType,true),StructField(reprint,StringType,true),StructField(role,StringType,true),StructField(wos_standard,StringType,true),StructField(last_name,StringType,true),StructField(dais_id,StringType,true),StructField(seq_no,StringType,true),StructField(suffix,StringType,true),StructField(r_id,StringType,true),StructField(addr_no,StringType,true)),array,ObjectType(class
[Lmain.listType1;)))
- writeObject data (class: scala.collection.immutable.$colon$colon)
- object (class scala.collection.immutable.$colon$colon,
List(invoke(count#0,toString,ObjectType(class java.lang.String)),
invoke(mapobjects(<function1>,cast(name#1 as
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>),StructField(display_name,StringType,true),StructField(first_name,StringType,true),StructField(full_name,StringType,true),StructField(reprint,StringType,true),StructField(role,StringType,true),StructField(wos_standard,StringType,true),StructField(last_name,StringType,true),StructField(dais_id,StringType,true),StructField(seq_no,StringType,true),StructField(suffix,StringType,true),StructField(r_id,StringType,true),StructField(addr_no,StringType,true)),array,ObjectType(class
[Lmain.listType1;))))
- field (class: org.apache.spark.sql.catalyst.expressions.NewInstance,
name: arguments, type: interface scala.collection.Seq)
- object (class org.apache.spark.sql.catalyst.expressions.NewInstance,
newinstance(class main.DatasetType1,invoke(count#0,toString,ObjectType(class
java.lang.String)),invoke(mapobjects(<function1>,cast(name#1 as
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>),StructField(display_name,StringType,true),StructField(first_name,StringType,true),StructField(full_name,StringType,true),StructField(reprint,StringType,true),StructField(role,StringType,true),StructField(wos_standard,StringType,true),StructField(last_name,StringType,true),StructField(dais_id,StringType,true),StructField(seq_no,StringType,true),StructField(suffix,StringType,true),StructField(r_id,StringType,true),StructField(addr_no,StringType,true)),array,ObjectType(class
[Lmain.listType1;)),false,ObjectType(class main.DatasetType1),None))
- field (class:
org.apache.spark.sql.catalyst.encoders.ExpressionEncoder, name:
fromRowExpression, type: class
org.apache.spark.sql.catalyst.expressions.Expression)
- object (class
org.apache.spark.sql.catalyst.encoders.ExpressionEncoder, class[count[0]:
string, name#ExprId(4,879d493d-efa1-4799-8fc4-5872ccb3b07b):
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>])
- field (class: org.apache.spark.sql.execution.MapPartitions, name:
tEncoder, type: class org.apache.spark.sql.catalyst.encoders.ExpressionEncoder)
- object (class org.apache.spark.sql.execution.MapPartitions,
!MapPartitions <function1>, class[count[0]: string,
name#ExprId(4,879d493d-efa1-4799-8fc4-5872ccb3b07b):
array<struct<display_name:string,first_name:string,full_name:string,reprint:string,role:string,wos_standard:string,last_name:string,dais_id:string,seq_no:string,suffix:string,r_id:string,addr_no:string>>],
class[value[0]: string], [value#10]
+- ConvertToSafe
+- Scan JSONRelation[count#0,name#1] InputPaths:
)
- field (class:
org.apache.spark.sql.execution.MapPartitions$$anonfun$8, name: $outer, type:
class org.apache.spark.sql.execution.MapPartitions)
- object (class
org.apache.spark.sql.execution.MapPartitions$$anonfun$8, <function1>)
- field (class:
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1, name: f$22, type:
interface scala.Function1)
- object (class
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1, <function0>)
- field (class:
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$21,
name: $outer, type: class
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1)
- object (class
org.apache.spark.rdd.RDD$$anonfun$mapPartitionsInternal$1$$anonfun$apply$21,
<function3>)
- field (class: org.apache.spark.rdd.MapPartitionsRDD, name: f, type:
interface scala.Function3)
- object (class org.apache.spark.rdd.MapPartitionsRDD,
MapPartitionsRDD[6] at collect at main.scala:63)
- field (class: org.apache.spark.NarrowDependency, name: _rdd, type:
class org.apache.spark.rdd.RDD)
- object (class org.apache.spark.OneToOneDependency,
org.apache.spark.OneToOneDependency@7793b55d)
- writeObject data (class: scala.collection.immutable.$colon$colon)
- object (class scala.collection.immutable.$colon$colon,
List(org.apache.spark.OneToOneDependency@7793b55d))
- field (class: org.apache.spark.rdd.RDD, name:
org$apache$spark$rdd$RDD$$dependencies_, type: interface scala.collection.Seq)
- object (class org.apache.spark.rdd.MapPartitionsRDD,
MapPartitionsRDD[7] at collect at main.scala:63)
- field (class: org.apache.spark.rdd.RDD$$anonfun$collect$1, name:
$outer, type: class org.apache.spark.rdd.RDD)
- object (class org.apache.spark.rdd.RDD$$anonfun$collect$1,
<function0>)
- field (class:
org.apache.spark.rdd.RDD$$anonfun$collect$1$$anonfun$12, name: $outer, type:
class org.apache.spark.rdd.RDD$$anonfun$collect$1)
- object (class
org.apache.spark.rdd.RDD$$anonfun$collect$1$$anonfun$12, <function1>)
at
org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40)
at
org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:47)
at
org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:101)
at
org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:301)
... 19 more
{code}
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