Pair<Double,Double> c = new Pair<Double,Double>(clusterWritable.getValue() .getCenter().get(0),
clusterWritable.getValue().getCenter().get(1));
assertTrue("center "+c+" not found", findAndRemove(c, refCenters, EPSILON));
assertTrue("more to come", reader.next(key, clusterWritable));
assertEquals("2nd key", "C-1", key.toString());
c = new Pair<Double,Double>(clusterWritable.getValue().getCenter().get(0),
clusterWritable.getValue().getCenter().get(1));
assertTrue("center " + c + " not found", findAndRemove(c, refCenters, EPSILON));
assertFalse("more to come", reader.next(key, clusterWritable));
} finally {