public int getPropertyProvidersWorkerQueueSize() {
    return Integer.parseInt(getProperty(PROPERTY_PROVIDER_THREADPOOL_WORKER_QUEUE_SIZE));
  }
Get property-providers' worker queue size. This will return
{@link Integer#MAX_VALUE} if not specified which will allow an unbounded
queue and essentially a fixed core threadpool size.

@return the property-providers' worker queue size.
ambari-server/src/main/java/org/apache/ambari/server/configuration/Configuration.java