/*
* Shuts down the pending replication monitor thread. Waits for the thread
* to exit.
*/
void stop() {
fsRunning = false;
timerThread.interrupt();
try {
timerThread.join(3000);
} catch (InterruptedException ie) {
}
}
/**
* main() has some simple utility methods.
*
* @param argv Command line parameters.
* @exception Exception if the filesystem does not exist.
*/
public static void main(String[] argv) throws Exception {
StringUtils.startupShutdownMessage(SecondaryNameNode.class, argv, LOG);
Configuration tconf = new Configuration();
if (argv.length >= 1) {
SecondaryNameNode secondary = new SecondaryNameNode(tconf);
int ret = secondary.processArgs(argv);
System.exit(ret);
}
// Create a never ending deamon
Daemon checkpointThread = new Daemon(new SecondaryNameNode(tconf));
checkpointThread.start();
}
/** Wait for service to finish. (Normally, it runs forever.) */
public void join() {
try {
if (server != null) server.join();
if (aggregateDaemon != null) aggregateDaemon.join();
} catch (InterruptedException ie) {
// do nothing
}
}
/** {@inheritDocs} */
@Override
public void stop() {
if (stopRequested) {
return;
}
super.stop();
if (jobMonitor != null) jobMonitor.running = false;
if (jobMonitorThread != null) jobMonitorThread.interrupt();
}
/** {@inheritDocs} */
@Override
public void join() {
super.join();
try {
if (jobMonitorThread != null) jobMonitorThread.join();
} catch (InterruptedException ie) {
// do nothing
}
}
void init() {
pendingReplications = new HashMap<Block, PendingBlockInfo>();
timedOutItems = new ArrayList<Block>();
this.timerThread = new Daemon(new PendingReplicationMonitor());
timerThread.start();
}
/** Stop all Collector threads and wait for all to finish. */
public void stop() {
running = false;
if (server != null) server.stop();
if (aggregateDaemon != null) aggregateDaemon.interrupt();
}
void start() {
daemon.start();
}
void join() throws InterruptedException {
daemon.join();
}
boolean isAlive() {
return daemon.isAlive();
}
public void shutdown() {
LOG.info("Stopping HealthMonitor thread");
shouldRun = false;
daemon.interrupt();
}