@Test
public void testParseBlokcing() {
DistCpOptions options = OptionsParser.parse(new String[] {
"hdfs://localhost:8020/source/first",
"hdfs://localhost:8020/target/"});
Assert.assertTrue(options.shouldBlock());
options = OptionsParser.parse(new String[] {
"-async",
"hdfs://localhost:8020/source/first",
"hdfs://localhost:8020/target/"});