/** Start listening for edits via RPC. */
public void start() throws IOException {
Preconditions.checkState(!isStarted(), "JN already running");
validateAndCreateJournalDir(localDir);
DefaultMetricsSystem.initialize("JournalNode");
JvmMetrics.create(
"JournalNode",
conf.get(DFSConfigKeys.DFS_METRICS_SESSION_ID_KEY),
DefaultMetricsSystem.instance());
InetSocketAddress socAddr = JournalNodeRpcServer.getAddress(conf);
SecurityUtil.login(
conf,
DFSConfigKeys.DFS_JOURNALNODE_KEYTAB_FILE_KEY,
DFSConfigKeys.DFS_JOURNALNODE_USER_NAME_KEY,
socAddr.getHostName());
registerJNMXBean();
httpServer = new JournalNodeHttpServer(conf, this);
httpServer.start();
rpcServer = new JournalNodeRpcServer(conf, this);
rpcServer.start();
}
@After
public void tearDown() {
if (hostFile != null && hostFile.exists()) {
hostFile.delete();
}
ClusterMetrics.destroy();
if (rm != null) {
rm.stop();
}
MetricsSystem ms = DefaultMetricsSystem.instance();
if (ms.getSource("ClusterMetrics") != null) {
DefaultMetricsSystem.shutdown();
}
}
public static synchronized FSQueueMetrics forQueue(
String queueName, Queue parent, boolean enableUserMetrics, Configuration conf) {
MetricsSystem ms = DefaultMetricsSystem.instance();
QueueMetrics metrics = queueMetrics.get(queueName);
if (metrics == null) {
metrics =
new FSQueueMetrics(ms, queueName, parent, enableUserMetrics, conf)
.tag(QUEUE_INFO, queueName);
// Register with the MetricsSystems
if (ms != null) {
metrics =
ms.register(
sourceName(queueName).toString(), "Metrics for queue: " + queueName, metrics);
}
queueMetrics.put(queueName, metrics);
}
return (FSQueueMetrics) metrics;
}
@SuppressWarnings("UnusedDeclaration")
public PullServerAuxService() {
this(DefaultMetricsSystem.instance());
}