Looks like it's refusing to initialize your spark context. Did you start the master spark://localhost:7077 before running mahout? Can you see a UI at localhost:8080?
If no to any of those try --master local[n], which will run the job locally not in a single machine cluster and will run much faster. Replace n with the number of cores you want to allocate, like local[7]. You should use the Spark start scripts when using a single machine cluster. If none of this helps, are you able to run any of the Spark examples on spark://localhost:7077? On Dec 21, 2014, at 9:28 AM, hlqv <hlqvu...@gmail.com> wrote: Hi everyone! In Mahout 1.0 Snapshot, I follow to this introduction https://mahout.apache.org/users/recommender/intro-cooccurrence-spark.html and running the command below: mahout spark-itemsimilarity --input hdfs://localhost:9000/test/logs.csv --output hdfs://localhost:9000/test/output/ --master spark://localhost:7077 --filter1 purchase --filter2 view --itemIDColumn 2 --rowIDColumn 0 --filterColumn 1 then I got the error: Exception in thread "main" com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka.event-handlers' at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:115) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:136) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:142) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:150) at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:155) at com.typesafe.config.impl.SimpleConfig.getList(SimpleConfig.java:203) at com.typesafe.config.impl.SimpleConfig.getHomogeneousUnwrappedList(SimpleConfig.java:260) at com.typesafe.config.impl.SimpleConfig.getStringList(SimpleConfig.java:318) at akka.actor.ActorSystem$Settings.<init>(ActorSystem.scala:150) at akka.actor.ActorSystemImpl.<init>(ActorSystem.scala:470) at akka.actor.ActorSystem$.apply(ActorSystem.scala:111) at akka.actor.ActorSystem$.apply(ActorSystem.scala:104) at org.apache.spark.util.AkkaUtils$.org$apache$spark$util$AkkaUtils$$doCreateActorSystem(AkkaUtils.scala:121) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:54) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:53) at org.apache.spark.util.Utils$$anonfun$startServiceOnPort$1.apply$mcVI$sp(Utils.scala:1446) at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:141) at org.apache.spark.util.Utils$.startServiceOnPort(Utils.scala:1442) at org.apache.spark.util.AkkaUtils$.createActorSystem(AkkaUtils.scala:56) at org.apache.spark.SparkEnv$.create(SparkEnv.scala:153) at org.apache.spark.SparkContext.<init>(SparkContext.scala:203) at org.apache.mahout.sparkbindings.package$.mahoutSparkContext(package.scala:95) at org.apache.mahout.drivers.MahoutSparkDriver.start(MahoutSparkDriver.scala:81) at org.apache.mahout.drivers.ItemSimilarityDriver$.start(ItemSimilarityDriver.scala:128) at org.apache.mahout.drivers.ItemSimilarityDriver$.process(ItemSimilarityDriver.scala:211) at org.apache.mahout.drivers.ItemSimilarityDriver$$anonfun$main$1.apply(ItemSimilarityDriver.scala:116) at org.apache.mahout.drivers.ItemSimilarityDriver$$anonfun$main$1.apply(ItemSimilarityDriver.scala:114) at scala.Option.map(Option.scala:145) at org.apache.mahout.drivers.ItemSimilarityDriver$.main(ItemSimilarityDriver.scala:114) at org.apache.mahout.drivers.ItemSimilarityDriver.main(ItemSimilarityDriver.scala) I really don't know there is any mistake in my configuration, I installed Hadoop with CDH4 and Spark with the version for CDH4 and also put a sample file to HDFS. Thanks for your help
