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Traning MLlib algorithm with yarn-cluster

Dataiker
Dataiker
Traning MLlib algorithm with yarn-cluster

Hi,



I try to build an Mllib model with yarn-cluster set as master, but the execution fails for both Random Forest and Logistic Regression. Input data is the iris dataset on HDFS.




  • yarn-cluster submission works for PySpark script, and master=local model building also works.

  • I've only set the master, executor-memory and executor-instances in the Spark config.



The relevant log part:




Exception in thread "main" java.lang.IllegalArgumentException: requirement    failed at scala.Predef$.require(Predef.scala:221) at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$8$$anonfun$apply$5.apply(Client.scala:501) at org.apache.spark.deploy.yarn.Client$$anonfun$prepareLocalResources$8$$anonfun$apply$5.apply(Client.scala:499) at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33) at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:108)
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1 Reply
Dataiker
Dataiker
Hi,

DSS does not support the yarn-cluster mode. This is due to the fact that when you train models, DSS needs to write results into the DSS datadir, which is much more difficult in yarn-cluster mode.

To run a DSS Spark job on your YARN cluster, use the yarn-client mode
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