"org.mK",
          "us",
          "co.uk.", // Trailing dot
          "co\uFF61uk", // Alternate dot character
          "\u7f51\u7edc.Cn", // "网络.Cn"
          "j\u00f8rpeland.no", // "jorpeland.no" (first o slashed)
          "xn--jrpeland-54a.no"); // IDNA (punycode) encoding of above

  private static final ImmutableSet<String> PS_NOT_RS =
      ImmutableSet.of("blogspot.com", "blogspot.co.uk", "uk.com");

	*pauses = p[:n+n+3]
}

// flushmcache flushes the mcache of allp[i].
//
// The world must be stopped.
//
//go:nowritebarrier
func flushmcache(i int) {
	assertWorldStopped()

	p := allp[i]
	c := p.mcache
	if c == nil {
		return
	}
	c.releaseAll()
	stackcache_clear(c)
}

// flushallmcaches flushes the mcaches of all Ps.
//
// The world must be stopped.
//

		morestack: ctxt.loader.Lookup("runtime.morestack", 0),
		height:    make(map[loader.Sym]int16, len(ctxt.Textp)),
	}
	// Compute stack effect of a CALL operation. 0 on LR machines.
	// 1 register pushed on non-LR machines.
	if !ctxt.Arch.HasLR {
		sc.callSize = ctxt.Arch.RegSize
	}

	if graph {
		// We're going to record the call graph.
		sc.graph = make(map[loader.Sym][]stackCheckEdge)
	}

		},
	}
	runner := New(fexec)
	// Success.
	err := runner.FlushSet("FOOBAR")
	if err != nil {
		t.Errorf("expected success, got %v", err)
	}
	if fcmd.CombinedOutputCalls != 1 {
		t.Errorf("expected 1 CombinedOutput() calls, got %d", fcmd.CombinedOutputCalls)
	}
	if !sets.NewString(fcmd.CombinedOutputLog[0]...).HasAll("ipset", "flush", "FOOBAR") {
		t.Errorf("wrong CombinedOutput() log, got %s", fcmd.CombinedOutputLog[0])

	}

	// Trailing fringe.
	copy(e.buf[:], p)
	e.nbuf = len(p)
	n += len(p)
	return
}

// Close flushes any pending output from the encoder.
// It is an error to call Write after calling Close.
func (e *encoder) Close() error {
	// If there's anything left in the buffer, flush it out
	if e.err == nil && e.nbuf > 0 {
		e.enc.Encode(e.out[0:], e.buf[0:e.nbuf])
		encodedLen := e.enc.EncodedLen(e.nbuf)

```
cat ${HADOOP_CONF_DIR}/core-site.xml | kv-pairify | grep "mapred"

mapred.maxthreads.generate.mapoutput=2 # Num threads to write map outputs
mapred.maxthreads.partition.closer=0 # Asynchronous map flushers
mapreduce.fileoutputcommitter.algorithm.version=2 # Use the latest committer version
mapreduce.job.reduce.slowstart.completedmaps=0.99 # 99% map, then reduce
mapreduce.reduce.shuffle.input.buffer.percent=0.9 # Min % buffer in RAM

	io.Writer
	fileState

	ReadFrom(io.Reader) (int64, error)
}

// Flush finishes writing the current file's block padding.
// The current file must be fully written before Flush can be called.
//
// This is unnecessary as the next call to [Writer.WriteHeader] or [Writer.Close]
// will implicitly flush out the file's padding.
func (tw *Writer) Flush() error {
	if tw.err != nil {
		return tw.err
	}

	}

	// Trailing fringe.
	copy(e.buf[:], p)
	e.nbuf = len(p)
	n += len(p)
	return
}

// Close flushes any pending output from the encoder.
// It is an error to call Write after calling Close.
func (e *encoder) Close() error {
	// If there's anything left in the buffer, flush it out
	if e.err == nil && e.nbuf > 0 {
		e.enc.Encode(e.out[:], e.buf[:e.nbuf])

func (e *Engine) Execute(s *State, file string, script *bufio.Reader, log io.Writer) (err error) {
	defer func(prev *Engine) { s.engine = prev }(s.engine)
	s.engine = e

	var sectionStart time.Time
	// endSection flushes the logs for the current section from s.log to log.
	// ok indicates whether all commands in the section succeeded.
	endSection := func(ok bool) error {
		var err error
		if sectionStart.IsZero() {

	EXTPROC                          = 0x10000
	FF1                              = 0x8000
	FFDLY                            = 0x8000
	FICLONE                          = 0x80049409
	FICLONERANGE                     = 0x8020940d
	FLUSHO                           = 0x2000
	FS_IOC_ENABLE_VERITY             = 0x80806685
	FS_IOC_GETFLAGS                  = 0x40086601
	FS_IOC_GET_ENCRYPTION_NONCE      = 0x4010661b
	FS_IOC_GET_ENCRYPTION_POLICY     = 0x800c6615