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https://issues.apache.org/jira/browse/PIO-213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16980326#comment-16980326
]
eduard commented on PIO-213:
----------------------------
it does not matter what are pio,spark,es versions
all the time pio train fails here
at
org.apache.predictionio.data.storage.elasticsearch.ESPEvents.delete(ESPEvents.scala:111)
due to
Exception in thread "main" org.apache.spark.SparkException: Task not
serializable
> Elastic search as event server does not work
> --------------------------------------------
>
> Key: PIO-213
> URL: https://issues.apache.org/jira/browse/PIO-213
> Project: PredictionIO
> Issue Type: Bug
> Components: Build, Core, Documentation
> Affects Versions: 0.14.0, 0.15.0
> Reporter: eduard
> Priority: Critical
>
> In docs we see that we can use elastic search as event store instead of hbase
> but we tried pio 0.14.0, 0.15.0 and different versions of elastic 5.9, 6.8.1
> and spark 2.1.3, 2.4.0
> all the time train fails because of json4s lib when spark cannot serialise an
> object from json4s
> we also tried to upgrade json4s lib to newest version but it also did not help
> so guys we given up since we cannot use elastic search instead of hbase
> without code changes
> here is stack trace we are struggling with: ( pio 0.15.0 with spark 2.4 )
> Exception in thread "main" org.apache.spark.SparkException: Task not
> serializable
> at
> org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:403)
> at
> org.apache.spark.util.ClosureCleaner$.org$apache$spark$util$ClosureCleaner$$clean(ClosureCleaner.scala:393)
> at org.apache.spark.util.ClosureCleaner$.clean(ClosureCleaner.scala:162)
> at org.apache.spark.SparkContext.clean(SparkContext.scala:2326)
> at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1.apply(RDD.scala:934)
> at org.apache.spark.rdd.RDD$$anonfun$foreachPartition$1.apply(RDD.scala:933)
> at
> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
> at
> org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
> at org.apache.spark.rdd.RDD.withScope(RDD.scala:363)
> at org.apache.spark.rdd.RDD.foreachPartition(RDD.scala:933)
> at
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents.delete(ESPEvents.scala:111)
> at
> org.apache.predictionio.core.SelfCleaningDataSource$class.removePEvents(SelfCleaningDataSource.scala:198)
> at co.unreel.DataSource.removePEvents(DataSource.scala:13)
> at
> org.apache.predictionio.core.SelfCleaningDataSource$class.wipePEvents(SelfCleaningDataSource.scala:184)
> at co.unreel.DataSource.wipePEvents(DataSource.scala:13)
> at co.unreel.DataSource.cleanPersistedPEvents(DataSource.scala:39)
> at co.unreel.DataSource.readTraining(DataSource.scala:48)
> at co.unreel.DataSource.readTraining(DataSource.scala:13)
> at
> org.apache.predictionio.controller.PDataSource.readTrainingBase(PDataSource.scala:40)
> at org.apache.predictionio.controller.Engine$.train(Engine.scala:642)
> at org.apache.predictionio.controller.Engine.train(Engine.scala:176)
> at
> org.apache.predictionio.workflow.CoreWorkflow$.runTrain(CoreWorkflow.scala:67)
> at
> org.apache.predictionio.workflow.CreateWorkflow$.main(CreateWorkflow.scala:251)
> at org.apache.predictionio.workflow.CreateWorkflow.main(CreateWorkflow.scala)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52)
> at
> org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:845)
> at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:161)
> at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:184)
> at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86)
> at
> org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:920)
> at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:929)
> at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> Caused by: java.io.NotSerializableException:
> org.json4s.ext.IntervalSerializer$$anon$1
> Serialization stack:
> - object not serializable (class: org.json4s.ext.IntervalSerializer$$anon$1,
> value: org.json4s.ext.IntervalSerializer$$anon$1@6d9428f3)
> - field (class: org.json4s.ext.ClassSerializer, name: t, type: interface
> org.json4s.ext.ClassType)
> - object (class org.json4s.ext.ClassSerializer,
> ClassSerializer(org.json4s.ext.IntervalSerializer$$anon$1@6d9428f3))
> - writeObject data (class:
> scala.collection.immutable.List$SerializationProxy)
> - object (class scala.collection.immutable.List$SerializationProxy,
> scala.collection.immutable.List$SerializationProxy@6106dfb6)
> - writeReplace data (class:
> scala.collection.immutable.List$SerializationProxy)
> - object (class scala.collection.immutable.$colon$colon,
> List(DurationSerializer, InstantSerializer, DateTimeSerializer,
> DateMidnightSerializer,
> ClassSerializer(org.json4s.ext.IntervalSerializer$$anon$1@6d9428f3),
> ClassSerializer(org.json4s.ext.LocalDateSerializer$$anon$2@7dddfc35),
> ClassSerializer(org.json4s.ext.LocalTimeSerializer$$anon$3@71316cd7),
> PeriodSerializer))
> - field (class: org.json4s.Formats$$anon$3, name: wCustomSerializers$1,
> type: class scala.collection.immutable.List)
> - object (class org.json4s.Formats$$anon$3,
> org.json4s.Formats$$anon$3@7a730479)
> - field (class:
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents, name: formats,
> type: interface org.json4s.Formats)
> - object (class
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents,
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents@3f45dfec)
> - field (class:
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents$$anonfun$delete$1,
> name: $outer, type: class
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents)
> - object (class
> org.apache.predictionio.data.storage.elasticsearch.ESPEvents$$anonfun$delete$1,
> <function1>)
> at
> org.apache.spark.serializer.SerializationDebugger$.improveException(SerializationDebugger.scala:40)
> at
> org.apache.spark.serializer.JavaSerializationStream.writeObject(JavaSerializer.scala:46)
> at
> org.apache.spark.serializer.JavaSerializerInstance.serialize(JavaSerializer.scala:100)
> at
> org.apache.spark.util.ClosureCleaner$.ensureSerializable(ClosureCleaner.scala:400)
> ... 35 more
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