* The Local Volume Plugin has been updated to support Block volumeMode PVs. With this change, it is now possible to create local volume PVs for raw block devices. ([#59303](https://github.com/kubernetes/kubernetes/pull/59303), [@dhirajh](https://github.com/dhirajh))

When you declare a *path operation function* with normal `def` instead of `async def`, it is run in an external threadpool that is then awaited, instead of being called directly (as it would block the server).

    this.clientAuth = CLIENT_AUTH_REQUIRED
  }

  /**
   * Awaits the next HTTP request, removes it, and returns it. Callers should use this to verify the
   * request was sent as intended. This method will block until the request is available, possibly
   * forever.
   *
   * @return the head of the request queue
   */
  @Throws(InterruptedException::class)
  public fun takeRequest(): RecordedRequest = requestQueue.take()

* Added block volume support to Cinder volume plugin. ([#64879](https://github.com/kubernetes/kubernetes/pull/64879), [@bertinatto](https://github.com/bertinatto))
* Provided API support for external CSI storage drivers to support block volumes. ([#64723](https://github.com/kubernetes/kubernetes/pull/64723), [@vladimirvivien](https://github.com/vladimirvivien))

		if len(extra) < fieldSize {
			break
		}
		fieldBuf := extra.sub(fieldSize)

		switch fieldTag {
		case zip64ExtraID:
			f.zip64 = true

			// update directory values from the zip64 extra block.
			// They should only be consulted if the sizes read earlier
			// are maxed out.
			// See golang.org/issue/13367.
			if needUSize {
				needUSize = false
				if len(fieldBuf) < 8 {
					return ErrFormat

			return buf.Bytes(), err
		}
	case madmin.ProfilerBlock:
		runtime.SetBlockProfileRate(100)
		prof.stopFn = func() ([]byte, error) {
			var buf bytes.Buffer
			err := pprof.Lookup("block").WriteTo(&buf, 0)
			runtime.SetBlockProfileRate(0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerMutex:
		prof.record("mutex", 0, "before")
		runtime.SetMutexProfileFraction(1)

   * value, you should always choose it explicitly.
   *
   * <p>The current implementation uses the concurrency level to create a fixed number of hashtable
   * segments, each governed by its own write lock. The segment lock is taken once for each explicit
   * write, and twice for each cache loading computation (once prior to loading the new value, and
   * once after loading completes). Much internal cache management is performed at the segment

      .isEqualTo(lastModifiedDate)
  }

  @Test
  fun maxAgeInThePastWithDateHeaderButNoLastModifiedHeader() {
    // Chrome interprets max-age relative to the local clock. Both our cache
    // and Firefox both use the earlier of the local and server's clock.
    assertNotCached(
      MockResponse
        .Builder()
        .addHeader("Date: " + formatDate(-120, TimeUnit.SECONDS))

SIG Storage made a lot of progress in the 1.18 release.
In particular, the following storage features are moving to GA in Kubernetes 1.18:
- Raw Block Support: Allow volumes to be surfaced as block devices inside containers instead of just mounted filesystems.
- Volume Cloning: Duplicate a PersistentVolumeClaim and underlying storage volume using the Kubernetes API via CSI.

b)g[f]=a.style[f],a.style[f]=b[f];e=c.apply(a,d||[]);for(f in b)a.style[f]=g[f];return e};var zb=/^(none|table(?!-c[ea]).+)/,Ab=new RegExp("^("+Q+")(.*)$","i"),Bb=new RegExp("^([+-])=("+Q+")","i"),Cb={position:"absolute",visibility:"hidden",display:"block"},Db={letterSpacing:"0",fontWeight:"400"},Eb=["Webkit","O","Moz","ms"];function Fb(a,b){if(b in a)return b;var c=b[0].toUpperCase()+b.slice(1),d=b,e=Eb.length;while(e--)if(b=Eb[e]+c,b in a)return b;return d}function Gb(a,b,c){var d=Ab.exec(b);return...