How to use

limitDecimalTo2

method

in

org.apache.hadoop.util.StringUtils

StringUtils.limitDecimalTo2(master.getServerManager().getAverageLoad())), jamonWriter);

/**
 * Return an abbreviated English-language desc of the byte length
 */
public static String byteDesc(long len) {
 double val = 0.0;
 String ending = "";
 if (len < 1024 * 1024) {
  val = (1.0 * len) / 1024;
  ending = " KB";
 } else if (len < 1024 * 1024 * 1024) {
  val = (1.0 * len) / (1024 * 1024);
  ending = " MB";
 } else if (len < 1024L * 1024 * 1024 * 1024) {
  val = (1.0 * len) / (1024 * 1024 * 1024);
  ending = " GB";
 } else if (len < 1024L * 1024 * 1024 * 1024 * 1024) {
  val = (1.0 * len) / (1024L * 1024 * 1024 * 1024);
  ending = " TB";
 } else {
  val = (1.0 * len) / (1024L * 1024 * 1024 * 1024 * 1024);
  ending = " PB";
 }
 return limitDecimalTo2(val) + ending;
}

/**
 * @deprecated Consider using {@link org.apache.hadoop.util.StringUtils#limitDecimalTo2} instead.
 */
@Deprecated
public static synchronized String limitDecimalTo2(double d) {
 return StringUtils.limitDecimalTo2(d);
}

/**
 * @deprecated Consider using {@link org.apache.hadoop.util.StringUtils#limitDecimalTo2} instead.
 */
@Deprecated
public static synchronized String limitDecimalTo2(double d) {
 return StringUtils.limitDecimalTo2(d);
}

/** A formatted string for printing the status of the DataNode. */
public String dumpDatanode() {
 StringBuffer buffer = new StringBuffer();
 long c = getCapacity();
 long r = getRemaining();
 long u = getDfsUsed();
 buffer.append(name);
 if (!NetworkTopology.DEFAULT_RACK.equals(location)) {
  buffer.append(" "+location);
 }
 if (isDecommissioned()) {
  buffer.append(" DD");
 } else if (isDecommissionInProgress()) {
  buffer.append(" DP");
 } else {
  buffer.append(" IN");
 }
 buffer.append(" " + c + "(" + StringUtils.byteDesc(c)+")");
 buffer.append(" " + u + "(" + StringUtils.byteDesc(u)+")");
 buffer.append(" " + StringUtils.limitDecimalTo2(((1.0*u)/c)*100)+"%");
 buffer.append(" " + r + "(" + StringUtils.byteDesc(r)+")");
 buffer.append(" " + new Date(lastUpdate));
 return buffer.toString();
}

/** A formatted string for reporting the status of the DataNode. */
public String getDatanodeReport() {
 StringBuffer buffer = new StringBuffer();
 long c = getCapacity();
 long r = getRemaining();
 long u = getDfsUsed();
 long nonDFSUsed = getNonDfsUsed();
 float usedPercent = getDfsUsedPercent();
 float remainingPercent = getRemainingPercent();
 buffer.append("Name: "+name+"\n");
 if (!NetworkTopology.DEFAULT_RACK.equals(location)) {
  buffer.append("Rack: "+location+"\n");
 }
 buffer.append("Decommission Status : ");
 if (isDecommissioned()) {
  buffer.append("Decommissioned\n");
 } else if (isDecommissionInProgress()) {
  buffer.append("Decommission in progress\n");
 } else {
  buffer.append("Normal\n");
 }
 buffer.append("Configured Capacity: "+c+" ("+StringUtils.byteDesc(c)+")"+"\n");
 buffer.append("DFS Used: "+u+" ("+StringUtils.byteDesc(u)+")"+"\n");
 buffer.append("Non DFS Used: "+nonDFSUsed+" ("+StringUtils.byteDesc(nonDFSUsed)+")"+"\n");
 buffer.append("DFS Remaining: " +r+ "("+StringUtils.byteDesc(r)+")"+"\n");
 buffer.append("DFS Used%: "+StringUtils.limitDecimalTo2(usedPercent)+"%\n");
 buffer.append("DFS Remaining%: "+StringUtils.limitDecimalTo2(remainingPercent)+"%\n");
 buffer.append("Last contact: "+new Date(lastUpdate)+"\n");
 return buffer.toString();
}

 private StringBuilder appendHistogram(StringBuilder sb, 
   MetricsHistogram histogram) {
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "Mean", 
    StringUtils.limitDecimalTo2(histogram.getMean()));
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "Count", 
    StringUtils.limitDecimalTo2(histogram.getCount()));
  final Snapshot s = histogram.getSnapshot();
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "Median", 
    StringUtils.limitDecimalTo2(s.getMedian()));
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "75th", 
    StringUtils.limitDecimalTo2(s.get75thPercentile()));
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "95th", 
    StringUtils.limitDecimalTo2(s.get95thPercentile()));
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "99th", 
    StringUtils.limitDecimalTo2(s.get99thPercentile()));
  sb = Strings.appendKeyValue(sb, 
    histogram.getName() + "999th", 
    StringUtils.limitDecimalTo2(s.get999thPercentile()));
  return sb;
 }
}

          + " (" + StringUtils.byteDesc(used) + ")");
System.out.println("DFS Used%: "
          + StringUtils.limitDecimalTo2(((1.0 * used) / presentCapacity) * 100)
          + "%");

 Long.valueOf(memory.getMax()/MB));
sb = Strings.appendKeyValue(sb, this.blockCacheSize.getName()+"MB",
  StringUtils.limitDecimalTo2((float)this.blockCacheSize.get()/MB));
sb = Strings.appendKeyValue(sb, this.blockCacheFree.getName()+"MB",
  StringUtils.limitDecimalTo2((float)this.blockCacheFree.get()/MB));
sb = Strings.appendKeyValue(sb, this.blockCacheCount.getName(),
  Long.valueOf(this.blockCacheCount.get()));

org.jamon.escaping.Escaping.HTML.write(org.jamon.emit.StandardEmitter.valueOf(StringUtils.limitDecimalTo2(master.getServerManager().getAverageLoad())), jamonWriter);

org.jamon.escaping.Escaping.HTML.write(org.jamon.emit.StandardEmitter.valueOf(StringUtils.limitDecimalTo2(master.getFServerManager().getAverageLoad())), jamonWriter);

StringUtils.limitDecimalTo2(master.getServerManager().getAverageLoad())), jamonWriter);