// Careful! Locking order is important!
// Check queue ACLs
UserGroupInformation userUgi = UserGroupInformation.createRemoteUser(userName);
if (!hasAccess(QueueACL.SUBMIT_APPLICATIONS, userUgi)) {
throw new AccessControlException("User " + userName + " cannot submit" +
" applications to queue " + getQueuePath());
}
User user = null;
synchronized (this) {
// Check if the queue is accepting jobs
if (getState() != QueueState.RUNNING) {
String msg = "Queue " + getQueuePath() +
" is STOPPED. Cannot accept submission of application: " +
application.getApplicationId();
LOG.info(msg);
throw new AccessControlException(msg);
}
// Check submission limits for queues
if (getNumApplications() >= getMaxApplications()) {
String msg = "Queue " + getQueuePath() +
" already has " + getNumApplications() + " applications," +
" cannot accept submission of application: " +
application.getApplicationId();
LOG.info(msg);
throw new AccessControlException(msg);
}
// Check submission limits for the user on this queue
user = getUser(userName);
if (user.getTotalApplications() >= getMaxApplicationsPerUser()) {
String msg = "Queue " + getQueuePath() +
" already has " + user.getTotalApplications() +
" applications from user " + userName +
" cannot accept submission of application: " +
application.getApplicationId();
LOG.info(msg);
throw new AccessControlException(msg);
}
// Add the application to our data-structures
addApplication(application, user);
}