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java.lang.ArrayIndexOutOfBoundsException: 1 at water.fvec.Vec.elem2ChunkIdx(Vec.java:504) at water.fvec.Frame$Slice.map(Frame.java:773) at water.MRTask2.compute2(MRTask2.java:391) at water.H2O$H2OCountedCompleter.compute(H2O.java:732) at jsr166y.CountedCompleter.exec(CountedCompleter.java:429) 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)