* the life cycle methods.
 *
 * <h3>Usage Example</h3>
 *
 * <p>Here is a sketch of a service which crawls a website and uses the scheduling capabilities to
 * rate limit itself.
 *
 * {@snippet :
 * class CrawlingService extends AbstractScheduledService {
 *   private Set<Uri> visited;
 *   private Queue<Uri> toCrawl;

    - [SIG Multicluster](#sig-multicluster)
    - [SIG Network](#sig-network)
    - [SIG Node](#sig-node)
    - [SIG Openstack](#sig-openstack)
    - [SIG Scalability](#sig-scalability)
    - [SIG Scheduling](#sig-scheduling)
    - [SIG Service Catalog](#sig-service-catalog)
    - [SIG Storage](#sig-storage)
    - [SIG UI](#sig-ui)
    - [SIG VMWare](#sig-vmware)
    - [SIG Windows](#sig-windows)

[scalability validation report]: https://github.com/kubernetes/sig-release/blob/master/releases/release-1.8/scalability_validation_report.md

### SIG Scheduling

[SIG Scheduling][] is responsible for generic scheduler and scheduling components.

For the 1.8 release, SIG Scheduling extended the concept of cluster sharing by introducing

    *   Added file system resizing for the following volume plugins: GCE PD, Ceph RBD, AWS EBS, OpenStack Cinder
*   [alpha] Topology Aware Volume Scheduling
    *   Improved volume scheduling for Local PersistentVolumes, by allowing the scheduler to make PersistentVolume binding decisions while respecting the Pod's scheduling requirements.
    *   Dynamic provisioning is not supported with this feature yet.
*   [alpha] Containerized mount utilities

        cleanup();
        return this.connections.contains(trans);
    }

    @Override
    public void removeTransport(final SmbTransport trans) {
        if (log.isDebugEnabled()) {
            log.debug("Scheduling transport connection for removal " + trans + " (" + System.identityHashCode(trans) + ")");
        }
        this.toRemove.add((SmbTransportImpl) trans);
    }

    private void cleanup() {

    - [SIG Cluster Lifecycle](#sig-cluster-lifecycle)
    - [SIG Instrumentation](#sig-instrumentation)
    - [SIG Network](#sig-network)
    - [SIG Node](#sig-node)
    - [SIG OpenStack](#sig-openstack)
    - [SIG Scheduling](#sig-scheduling)
    - [SIG Storage](#sig-storage)
    - [SIG Windows](#sig-windows)
  - [Known Issues](#known-issues)
  - [Before Upgrading](#before-upgrading)
      - [New Deprecations](#new-deprecations)

    - [Federation](#federation)
    - [Internal Storage Layer](#internal-storage-layer)
    - [Node Components](#node-components)
    - [kubectl](#kubectl)
    - [RBAC](#rbac)
    - [Scheduling](#scheduling)
    - [Service](#service)
    - [StatefulSet](#statefulset)
    - [Volumes](#volumes)
  - [Notable Features](#notable-features)
    - [Autoscaling](#autoscaling)
    - [DaemonSet](#daemonset)

  - PriorityClass resources will no longer be served from `scheduling.k8s.io/v1beta1` and `scheduling.k8s.io/v1alpha1` in v1.17. Migrate use to the `scheduling.k8s.io/v1` API, available since v1.14. Existing persisted data can be retrieved via the `scheduling.k8s.io/v1` API.
  - The `export` query parameter for list API calls, deprecated since v1.14, will be removed in v1.18.

    - [Cluster provisioning scripts](#cluster-provisioning-scripts)
    - [Client libraries](#client-libraries)
    - [DaemonSet](#daemonset)
    - [kube-proxy](#kube-proxy)
    - [Namespace](#namespace)
    - [Scheduling](#scheduling)
  - [**Notable Features**](#notable-features)
  - [Kubefed](#kubefed)
    - [**Kubernetes API**](#kubernetes-api)
      - [User Provided Extensions](#user-provided-extensions)

  /** http://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-5.1.1 */
  internal var nextStreamId = if (builder.client) 3 else 2

  private var isShutdown = false

  /** For scheduling everything asynchronous. */
  private val taskRunner = builder.taskRunner

  /** Asynchronously writes frames to the outgoing socket. */
  private val writerQueue = taskRunner.newQueue()