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From TJ <>
Subject pio Train error
Date Fri, 02 Dec 2016 11:11:41 GMT

I am a complete newbie with this software and after nearly a week now of trying to install
prediction incubating and its dependencies I have finally got to the stage where I can see
the ‘pio status’

However, I now get an error when running ‘pio train’

[INFO] [Engine] Datasource params: (,DataSourceParams(MyTestApp,None))
[INFO] [Engine] Extracting preparator params...
[INFO] [Engine] Preparator params: (,Empty)
[INFO] [Engine] Extracting serving params...
[INFO] [Engine] Serving params: (,Empty)
[INFO] [Remoting] Starting remoting
[INFO] [Remoting] Remoting started; listening on addresses :[akka.tcp://sparkDriver@]
[WARN] [MetricsSystem] Using default name DAGScheduler for source because is
not set.
[INFO] [Engine$] EngineWorkflow.train
[INFO] [Engine$] DataSource: com.iqchef.DataSource@5dfe23e8
[INFO] [Engine$] Preparator: com.iqchef.Preparator@1989e8c6
[INFO] [Engine$] AlgorithmList: List(com.iqchef.ALSAlgorithm@67d32a54)
[INFO] [Engine$] Data sanity check is on.
[INFO] [Engine$] com.iqchef.TrainingData does not support data sanity check. Skipping check.
[INFO] [Engine$] com.iqchef.PreparedData does not support data sanity check. Skipping check.
Exception in thread “main" org.apache.spark.SparkException: Job aborted due to stage failure:
Task serialization failed: java.lang.reflect.InvocationTargetException

Could somebody point me in the right direction as to how to fix this problem?

My pio status result is as follows

root@server1 [/MyTest]# pio status
[INFO] [Console$] Inspecting PredictionIO...
[INFO] [Console$] PredictionIO 0.10.0-incubating is installed at /home/aml/apache-predictionio-0.10.0-incubating/PredictionIO-0.10.0-incubating
[INFO] [Console$] Inspecting Apache Spark...
[INFO] [Console$] Apache Spark is installed at /home/aml/apache-predictionio-0.10.0-incubating/PredictionIO-0.10.0-incubating/vendors/spark-1.5.1-bin-hadoop2.6
[INFO] [Console$] Apache Spark 1.5.1 detected (meets minimum requirement of 1.3.0)
[INFO] [Console$] Inspecting storage backend connections...
[INFO] [Storage$] Verifying Meta Data Backend (Source: PGSQL)...
[INFO] [Storage$] Verifying Model Data Backend (Source: PGSQL)...
[INFO] [Storage$] Verifying Event Data Backend (Source: PGSQL)...
[INFO] [Storage$] Test writing to Event Store (App Id 0)...
[INFO] [Console$] (sleeping 5 seconds for all messages to show up...)
[INFO] [Console$] Your system is all ready to go.

Many thanks in advance. 

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