i believe the error is related to an org.apache.spark.sql.expressions.Aggregator where the buffer type (BUF) is Array[Int]
On Wed, Apr 12, 2017 at 4:19 PM, Koert Kuipers <ko...@tresata.com> wrote: > hey all, > today i tried upgrading the spark version we use internally by creating a > new internal release from the spark master branch. last time i did this was > march 7. > > with this updated spark i am seeing some serialization errors in the unit > tests for our own libraries. looks like a scala reflection type that is not > serializable is getting sucked into serialization for the encoder? > see below. > best, > koert > > [info] org.apache.spark.SparkException: Task not serializable > [info] at org.apache.spark.util.ClosureCleaner$.ensureSerializable( > ClosureCleaner.scala:298) > [info] at org.apache.spark.util.ClosureCleaner$.org$apache$ > spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:288) > [info] at org.apache.spark.util.ClosureCleaner$.clean( > ClosureCleaner.scala:108) > [info] at org.apache.spark.SparkContext.clean(SparkContext.scala:2284) > [info] at org.apache.spark.SparkContext.runJob(SparkContext.scala:2058) > ... > [info] Serialization stack: > [info] - object not serializable (class: > scala.reflect.internal.BaseTypeSeqs$BaseTypeSeq, > value: BTS(Int,AnyVal,Any)) > [info] - field (class: scala.reflect.internal.Types$TypeRef, name: > baseTypeSeqCache, type: class scala.reflect.internal. > BaseTypeSeqs$BaseTypeSeq) > [info] - object (class scala.reflect.internal.Types$ClassNoArgsTypeRef, > Int) > [info] - field (class: > org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$6, > name: elementType$2, type: class scala.reflect.api.Types$TypeApi) > [info] - object (class > org.apache.spark.sql.catalyst.ScalaReflection$$anonfun$6, > <function1>) > [info] - field (class: org.apache.spark.sql.catalyst. > expressions.objects.UnresolvedMapObjects, name: function, type: interface > scala.Function1) > [info] - object (class org.apache.spark.sql.catalyst. > expressions.objects.UnresolvedMapObjects, unresolvedmapobjects(<function1>, > getcolumnbyordinal(0, ArrayType(IntegerType,false)), Some(interface > scala.collection.Seq))) > [info] - field (class: org.apache.spark.sql.catalyst. > expressions.objects.WrapOption, name: child, type: class > org.apache.spark.sql.catalyst.expressions.Expression) > [info] - object (class org.apache.spark.sql.catalyst. > expressions.objects.WrapOption, wrapoption(unresolvedmapobjects(<function1>, > getcolumnbyordinal(0, ArrayType(IntegerType,false)), Some(interface > scala.collection.Seq)), ObjectType(interface scala.collection.Seq))) > [info] - writeObject data (class: scala.collection.immutable. > List$SerializationProxy) > [info] - object (class scala.collection.immutable.List$SerializationProxy, > scala.collection.immutable.List$SerializationProxy@69040c85) > [info] - writeReplace data (class: scala.collection.immutable. > List$SerializationProxy) > [info] - object (class scala.collection.immutable.$colon$colon, > List(wrapoption(unresolvedmapobjects(<function1>, getcolumnbyordinal(0, > ArrayType(IntegerType,false)), Some(interface scala.collection.Seq)), > ObjectType(interface scala.collection.Seq)))) > [info] - field (class: org.apache.spark.sql.catalyst. > expressions.objects.NewInstance, name: arguments, type: interface > scala.collection.Seq) > [info] - object (class org.apache.spark.sql.catalyst. > expressions.objects.NewInstance, newInstance(class scala.Tuple1)) > [info] - field (class: > org.apache.spark.sql.catalyst.encoders.ExpressionEncoder, > name: deserializer, type: class org.apache.spark.sql.catalyst. > expressions.Expression) > [info] - object (class > org.apache.spark.sql.catalyst.encoders.ExpressionEncoder, > class[_1[0]: array<int>]) > ... > >
