Utilities.addMapWork(mr, src, "a", op4);
mr.setKeyDesc(op1.getConf().getKeySerializeInfo());
mr.getTagToValueDesc().add(op1.getConf().getValueSerializeInfo());
// reduce side work
Operator<fileSinkDesc> op3 = OperatorFactory.get(new fileSinkDesc
(tmpdir + "mapredplan6.out",
Utilities.defaultTd, false));
Operator<filterDesc> op2 =
OperatorFactory.get(getTestFilterDesc("0"), op3);