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via JIRA by jhki, 1 year ago
java.lang.NullPointerException: 	at water.rapids.ast.prims.advmath.AstKFold.stratifiedKFoldColumn(AstKFold.java:62)	at hex.ModelBuilder.cv_AssignFold(ModelBuilder.java:310)	at hex.ModelBuilder.computeCrossValidation(ModelBuilder.java:257)	at hex.ModelBuilder$1.compute2(ModelBuilder.java:200)	at water.H2O$H2OCountedCompleter.compute(H2O.java:1198)	at jsr166y.CountedCompleter.exec(CountedCompleter.java:468)	at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)	at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)	at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)	at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)