HBASE-2011 Add zktop like output to HBase's master UI
git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@884476 13f79535-47bb-0310-9956-ffa450edef68
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@ -207,6 +207,8 @@ Release 0.21.0 - Unreleased
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dfsadmin -safemode wait"
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HBASE-2009 [EC2] Support mapreduce
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HBASE-2012 [EC2] LZO support
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HBASE-2011 Add zktop like output to HBase's master UI (Lars George via
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Andrew Purtell)
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NEW FEATURES
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HBASE-1901 "General" partitioner for "hbase-48" bulk (behind the api, write
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@ -19,8 +19,12 @@
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*/
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package org.apache.hadoop.hbase.zookeeper;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintWriter;
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import java.net.InetAddress;
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import java.net.Socket;
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import java.net.UnknownHostException;
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import java.util.ArrayList;
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import java.util.List;
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@ -171,8 +175,62 @@ public class ZooKeeperWrapper implements HConstants {
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for (HServerAddress address : scanRSDirectory()) {
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sb.append("\n - ").append(address);
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}
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sb.append("\n Quorum Server Statistics:");
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String[] servers = quorumServers.split(",");
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for (String server : servers) {
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sb.append("\n - ").append(server);
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try {
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String[] stat = getServerStats(server);
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for (String s : stat) {
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sb.append("\n ").append(s);
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}
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} catch (Exception e) {
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sb.append("\n ERROR: ").append(e.getMessage());
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}
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}
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return sb.toString();
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}
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/**
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* Gets the statistics from the given server. Uses a 1 minute timeout.
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*
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* @param server The server to get the statistics from.
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* @return The array of response strings.
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* @throws IOException When the socket communication fails.
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*/
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public String[] getServerStats(String server)
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throws IOException {
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return getServerStats(server, 1 * 60 * 1000);
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}
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/**
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* Gets the statistics from the given server.
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*
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* @param server The server to get the statistics from.
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* @param timeout The socket timeout to use.
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* @return The array of response strings.
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* @throws IOException When the socket communication fails.
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*/
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public String[] getServerStats(String server, int timeout)
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throws IOException {
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String[] sp = server.split(":");
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Socket socket = new Socket(sp[0],
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sp.length > 1 ? Integer.parseInt(sp[1]) : 2181);
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socket.setSoTimeout(timeout);
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PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
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BufferedReader in = new BufferedReader(new InputStreamReader(
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socket.getInputStream()));
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out.println("stat");
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out.flush();
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ArrayList<String> res = new ArrayList<String>();
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while (true) {
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String line = in.readLine();
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if (line != null) res.add(line);
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else break;
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}
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socket.close();
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return res.toArray(new String[res.size()]);
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}
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private boolean exists(String znode) {
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try {
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