- Images for cloud-controller-manager, kube-apiserver, kube-controller-manager, and kube-scheduler now contain a minimal /etc/nsswitch.conf and should respect /etc/hosts for lookups ([#69238](https://github.com/kubernetes/kubernetes/pull/69238), [@BenTheElder](https://github.com/BenTheElder))

### SIG Scheduling

- Changed Job controller to use the controller UID index for Pod lookups to improve performance. ([#132305](https://github.com/kubernetes/kubernetes/pull/132305), [@xigang](https://github.com/xigang))

- Hostnames are now converted to lowercase before being used for node lookups in the kubernetes-worker charm. ([#65487](https://github.com/kubernetes/kubernetes/pull/65487), [@dshcherb](https://github.com/dshcherb))

  const val FLAG_COMPRESSED = 0x20 // Used for data.

  /** Lookup table for valid frame types. */
  private val FRAME_NAMES =
    arrayOf(
      "DATA",
      "HEADERS",
      "PRIORITY",
      "RST_STREAM",
      "SETTINGS",
      "PUSH_PROMISE",
      "PING",
      "GOAWAY",
      "WINDOW_UPDATE",
      "CONTINUATION",
    )

  /**

    static final VarHandle valueUpdater;

    static {
      MethodHandles.Lookup lookup = MethodHandles.lookup();
      try {
        waiterThreadUpdater = lookup.findVarHandle(Waiter.class, "thread", Thread.class);
        waiterNextUpdater = lookup.findVarHandle(Waiter.class, "next", Waiter.class);
        waitersUpdater =
            lookup.findVarHandle(AbstractFutureState.class, "waitersField", Waiter.class);

    dns[PROXY_A_HOST] = dns.allocate(2)
    val selection = routeSelector.next()
    assertRoute(selection.next(), address, proxyA, dns.lookup(PROXY_A_HOST, 0), PROXY_A_PORT)
    assertRoute(selection.next(), address, proxyA, dns.lookup(PROXY_A_HOST, 1), PROXY_A_PORT)
    assertThat(selection.hasNext()).isFalse()
    assertThat(routeSelector.hasNext()).isFalse()
    dns.assertRequests(PROXY_A_HOST)

   */
  @Throws(UnknownHostException::class)
  fun lookup(hostname: String): List<InetAddress>

  companion object {
    /**
     * A DNS that uses [InetAddress.getAllByName] to ask the underlying operating system to
     * lookup IP addresses. Most custom [Dns] implementations should delegate to this instance.
     */
    @JvmField
    val SYSTEM: Dns = DnsSystem()

    assertThat(cacheEvents()).containsExactly("CacheMiss")

    result = cachedDns.lookup("google.com")
    assertThat(server.takeRequest(1, TimeUnit.MILLISECONDS)).isNull()
    assertThat(result).isEqualTo(listOf(address("157.240.1.18")))

    assertThat(cacheEvents()).containsExactly("CacheHit")

    result = cachedDns.lookup("www.google.com")
    assertThat(result).containsExactly(address("157.240.1.18"))

    this.finalizableReferenceClassReference = new WeakReference<>(finalizableReferenceClass);

    // Keep track of the FRQ that started us so we know when to stop.
    this.frqReference = frqReference;
  }

  /** Loops continuously, pulling references off the queue and cleaning them up. */
  @SuppressWarnings("InfiniteLoopStatement")
  @Override
  public void run() {
    while (true) {
      try {

   *
   * Package-private "shouldn't" be necessary: The *AtomicHelper classes and AbstractFutureState
   * "should" be nestmates, so a call to MethodHandles.lookup or
   * AtomicReferenceFieldUpdater.newUpdater inside *AtomicHelper "should" have access to
   * AbstractFutureState's private fields. However, our open-source build uses `-source 8 -target