/**
* Ensure that fs.defaultFS is set in the configuration even if neither HA nor Federation is
* enabled.
*
* <p>Regression test for HDFS-3351.
*/
@Test
public void testConfModificationNoFederationOrHa() {
final HdfsConfiguration conf = new HdfsConfiguration();
String nsId = null;
String nnId = null;
conf.set(DFS_NAMENODE_RPC_ADDRESS_KEY, "localhost:1234");
assertFalse("hdfs://localhost:1234".equals(conf.get(FS_DEFAULT_NAME_KEY)));
NameNode.initializeGenericKeys(conf, nsId, nnId);
assertEquals("hdfs://localhost:1234", conf.get(FS_DEFAULT_NAME_KEY));
}
/**
* Test to ensure nameservice specific keys in the configuration are copied to generic keys when
* the namenode starts.
*/
@Test
public void testConfModificationFederationAndHa() {
final HdfsConfiguration conf = new HdfsConfiguration();
String nsId = "ns1";
String nnId = "nn1";
conf.set(DFS_NAMESERVICES, nsId);
conf.set(DFS_NAMESERVICE_ID, nsId);
conf.set(DFS_HA_NAMENODES_KEY_PREFIX + "." + nsId, nnId);
// Set the nameservice specific keys with nameserviceId in the config key
for (String key : NameNode.NAMENODE_SPECIFIC_KEYS) {
// Note: value is same as the key
conf.set(DFSUtil.addKeySuffixes(key, nsId, nnId), key);
}
// Initialize generic keys from specific keys
NameNode.initializeGenericKeys(conf, nsId, nnId);
// Retrieve the keys without nameserviceId and Ensure generic keys are set
// to the correct value
for (String key : NameNode.NAMENODE_SPECIFIC_KEYS) {
assertEquals(key, conf.get(key));
}
}