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java.lang.ArrayIndexOutOfBoundsException: 4 at hex.genmodel.GenModel.KMeans_distance( at hex.kmeans.KMeans.closest( at hex.kmeans.KMeans.minSqr( at hex.kmeans.KMeans.recluster( at hex.kmeans.KMeans.access$600( at hex.kmeans.KMeans$KMeansDriver.initial_centers( at hex.kmeans.KMeans$KMeansDriver.computeImpl( at hex.ModelBuilder$Driver.compute2( at water.H2O$H2OCountedCompleter.compute( at jsr166y.CountedCompleter.exec( at jsr166y.ForkJoinTask.doExec( at jsr166y.ForkJoinPool$WorkQueue.runTask( at jsr166y.ForkJoinPool.runWorker( at