code: func (mp *MergePolicyImpl) SetMaxCFSSegmentSizeMB(v float64) {
  	assert2(v >= 0, fmt.Sprintf("maxCFSSegmentSizeMB must be >=0 (got %v)", v))
  	v *= 1024 * 1024
  	if v > float64(math.MaxInt64) {
  		mp.maxCFSSegmentSize = math.MaxInt64
  	} else {
  		mp.maxCFSSegmentSize = v
  	}
  }
docs: /*
  If a merged segment will be more than this value, leave the segment
  as non-compound file even if compound file is enabled. Set this to
  math.Inf(1) (default) and noCFSRatio to 1.0 to always use CFS
  regardless of merge size.
  */