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via Stack Overflow by MichaelDD
, 2 years ago
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via GitHub by car2008
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java.lang.UnsupportedOperationException: empty collection at org.apache.spark.rdd.RDD$$anonfun$first$1.apply(RDD.scala:1318) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:147) at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:108) at org.apache.spark.rdd.RDD.withScope(RDD.scala:310) at org.apache.spark.rdd.RDD.first(RDD.scala:1315) at org.apache.spark.mllib.recommendation.MatrixFactorizationModel.validateFeatures(MatrixFactorizationModel.scala:67) at org.apache.spark.mllib.recommendation.MatrixFactorizationModel.<init>(MatrixFactorizationModel.scala:62) at org.apache.spark.mllib.recommendation.ALS.run(ALS.scala:266) at org.apache.spark.mllib.recommendation.ALS$.train(ALS.scala:328) at org.apache.spark.mllib.recommendation.ALS$.train(ALS.scala:346)