public JungGraphObserver(String name) {
this.name = name;
this.hyphadataPid = Configuration.getPid(PAR_HYPHADATA_PROTO);
this.hyphalinkPid = Configuration.getPid(PAR_HYPHALINK_PROTO);
this.mycocastPid = Configuration.getPid(PAR_MYCOCAST_PROTO);
this.period = Configuration.getInt(name + "." + PAR_PERIOD);
this.walkDelay = Configuration.getInt(name + "." + PAR_WALK_DELAY);
mainThread = Thread.currentThread();
this.changeListeners = new HashSet<ChangeListener>();
visualizer = null;
// HyphaData.addHyphaDataListener(this);
// HyphaLink.addHyphaLinkListener(this);
}
public static InetSocketAddress getAddress(Configuration conf) {
String jobTrackerStr = conf.get("mapred.job.tracker", "localhost:8012");
int colon = jobTrackerStr.indexOf(":");
if (colon < 0) {
throw new RuntimeException("Bad mapred.job.tracker: " + jobTrackerStr);
}
String jobTrackerName = jobTrackerStr.substring(0, colon);
int jobTrackerPort = Integer.parseInt(jobTrackerStr.substring(colon + 1));
return new InetSocketAddress(jobTrackerName, jobTrackerPort);
}
/** Start the JobTracker process, listen on the indicated port */
JobTracker(Configuration conf) throws IOException {
//
// Grab some static constants
//
maxCurrentTasks = conf.getInt("mapred.tasktracker.tasks.maximum", 2);
RETIRE_JOB_INTERVAL = conf.getLong("mapred.jobtracker.retirejob.interval", 24 * 60 * 60 * 1000);
RETIRE_JOB_CHECK_INTERVAL = conf.getLong("mapred.jobtracker.retirejob.check", 60 * 1000);
TASK_ALLOC_EPSILON = conf.getFloat("mapred.jobtracker.taskalloc.loadbalance.epsilon", 0.2f);
PAD_FRACTION = conf.getFloat("mapred.jobtracker.taskalloc.capacitypad", 0.1f);
MIN_SLOTS_FOR_PADDING = 3 * maxCurrentTasks;
// This is a directory of temporary submission files. We delete it
// on startup, and can delete any files that we're done with
this.conf = conf;
JobConf jobConf = new JobConf(conf);
this.systemDir = jobConf.getSystemDir();
this.fs = FileSystem.get(conf);
FileUtil.fullyDelete(fs, systemDir);
fs.mkdirs(systemDir);
// Same with 'localDir' except it's always on the local disk.
jobConf.deleteLocalFiles(SUBDIR);
// Set ports, start RPC servers, etc.
InetSocketAddress addr = getAddress(conf);
this.localMachine = addr.getHostName();
this.port = addr.getPort();
this.interTrackerServer = RPC.getServer(this, addr.getPort(), 10, false, conf);
this.interTrackerServer.start();
Properties p = System.getProperties();
for (Iterator it = p.keySet().iterator(); it.hasNext(); ) {
String key = (String) it.next();
String val = (String) p.getProperty(key);
LOG.info("Property '" + key + "' is " + val);
}
this.infoPort = conf.getInt("mapred.job.tracker.info.port", 50030);
this.infoServer = new JobTrackerInfoServer(this, infoPort);
this.infoServer.start();
this.startTime = System.currentTimeMillis();
new Thread(this.expireTrackers).start();
new Thread(this.retireJobs).start();
new Thread(this.initJobs).start();
}
