}
});
Assert.assertEquals(3, filter.count());
JavaDoubleRDD union = rdd.union(rdd);
Assert.assertEquals(12, union.count());
union = union.cache();
Assert.assertEquals(12, union.count());
Assert.assertEquals(20, rdd.sum(), 0.01);
StatCounter stats = rdd.stats();
Assert.assertEquals(20, stats.sum(), 0.01);