import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
@Override
public void transition(LocalizedResource rsrc, ResourceEvent event) {
  ResourceRequestEvent req = (ResourceRequestEvent) event;
  LocalizerContext ctxt = req.getContext();
  ContainerId container = ctxt.getContainerId();
  rsrc.ref.add(container);
  rsrc.dispatcher.getEventHandler().handle(
      new LocalizerResourceRequestEvent(rsrc, req.getVisibility(), ctxt, 
          req.getLocalResourceRequest().getPattern()));
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
@Override
public void handle(LocalizerEvent event) {
  String locId = event.getLocalizerId();
  switch (event.getType()) {
  case REQUEST_RESOURCE_LOCALIZATION:
    // 0) find running localizer or start new thread
    LocalizerResourceRequestEvent req =
      (LocalizerResourceRequestEvent)event;
    switch (req.getVisibility()) {
    case PUBLIC:
      publicLocalizer.addResource(req);
      break;
    case PRIVATE:
    case APPLICATION:
      synchronized (privLocalizers) {
        LocalizerRunner localizer = privLocalizers.get(locId);
        if (null == localizer) {
          LOG.info("Created localizer for " + locId);
          localizer = new LocalizerRunner(req.getContext(), locId);
          privLocalizers.put(locId, localizer);
          localizer.start();
        }
        // 1) propagate event
        localizer.addResource(req);
      }
      break;
    }
    break;
  }
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
PublicLocalizer(Configuration conf) {
  super("Public Localizer");
  this.lfs = getLocalFileContext(conf);
  this.conf = conf;
  this.pending = Collections.synchronizedMap(
      new HashMap<Future<Path>, LocalizerResourceRequestEvent>());
  this.threadPool = createLocalizerExecutor(conf);
  this.queue = new ExecutorCompletionService<Path>(threadPool);
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
LocalizerRunner(LocalizerContext context, String localizerId) {
  super("LocalizerRunner for " + localizerId);
  this.context = context;
  this.localizerId = localizerId;
  this.pending =
      Collections
        .synchronizedList(new ArrayList<LocalizerResourceRequestEvent>());
  this.scheduled =
      new HashMap<LocalResourceRequest, LocalizerResourceRequestEvent>();
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
@Override
public boolean matches(Object o) {
  if (!(o instanceof LocalizerResourceRequestEvent)) return false;
  LocalizerResourceRequestEvent evt = (LocalizerResourceRequestEvent) o;
  return idRef == evt.getContext().getContainerId()
      && type == evt.getType()
      && vis == evt.getVisibility()
      && creds == evt.getContext().getCredentials();
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
PublicLocalizer(Configuration conf, FileContext lfs,
    ExecutorService threadPool,
    Map<Future<Path>,LocalizerResourceRequestEvent> pending) {
  super("Public Localizer");
  this.lfs = lfs;
  this.conf = conf;
  this.pending = pending;

  this.threadPool = threadPool;
  this.queue = new ExecutorCompletionService<Path>(threadPool);
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
LocalizerRunner(LocalizerContext context, String localizerId) {
  super("LocalizerRunner for " + localizerId);
  this.context = context;
  this.localizerId = localizerId;
  this.pending = new ArrayList<LocalizerResourceRequestEvent>();
  this.scheduled =
      new HashMap<LocalResourceRequest, LocalizerResourceRequestEvent>();
}
 

import org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.event.LocalizerResourceRequestEvent; //导入依赖的package包/类
PublicLocalizer(Configuration conf) {
  super("Public Localizer");
  this.lfs = getLocalFileContext(conf);
  this.conf = conf;
  this.pending =
      new ConcurrentHashMap<Future<Path>, LocalizerResourceRequestEvent>();
  this.threadPool = createLocalizerExecutor(conf);
  this.queue = new ExecutorCompletionService<Path>(threadPool);
}