new HashMap<Long, Set<ChangeId>>(), new TreeMap<Long, Set<ChangeId>>());
HDFSTransactionStateStorage tmpStorage =
new HDFSTransactionStateStorage(conf, new SnapshotCodecProvider(conf));
tmpStorage.startAndWait();
tmpStorage.writeSnapshot(snapshot);
tmpStorage.stopAndWait();
}
@AfterClass
public static void shutdownAfterClass() throws Exception {
dfsCluster.shutdown();