@Before
public void setUp() throws Exception {
// bring up a cluster of 2
conf = new HdfsConfiguration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, block_size);
// Allow a single volume failure (there are two volumes)
conf.setInt(DFSConfigKeys.DFS_DATANODE_FAILED_VOLUMES_TOLERATED_KEY, 1);
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(dn_num).build();
cluster.waitActive();
fs = cluster.getFileSystem();
dataDir = new File(cluster.getDataDirectory());
}
@Before
public void setUp() throws Exception {
conf = new HdfsConfiguration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, 512L);
/*
* Lower the DN heartbeat, DF rate, and recheck interval to one second
* so state about failures and datanode death propagates faster.
*/
conf.setInt(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);
conf.setInt(DFSConfigKeys.DFS_DF_INTERVAL_KEY, 1000);
conf.setInt(DFSConfigKeys.DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_KEY, 1000);
// Allow a single volume failure (there are two volumes)
conf.setInt(DFSConfigKeys.DFS_DATANODE_FAILED_VOLUMES_TOLERATED_KEY, 1);
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
cluster.waitActive();
fs = cluster.getFileSystem();
dataDir = cluster.getDataDirectory();
}