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Posted to commits@hbase.apache.org by gi...@apache.org on 2017/12/17 15:17:59 UTC
[20/28] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/48bd3915/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.html
index e621e0e..0b475e4 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/HQuorumPeer.html
@@ -43,11 +43,11 @@
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HBaseConfiguration;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HBaseInterfaceAudience;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HConstants;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.DNS;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.Strings;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.util.StringUtils;<a name="line.42"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.DNS;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.Strings;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.util.StringUtils;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.yetus.audience.InterfaceStability;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.zookeeper.server.ServerConfig;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.zookeeper.server.ZooKeeperServerMain;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.apache.zookeeper.server.quorum.QuorumPeerConfig;<a name="line.45"></a>
@@ -62,113 +62,116 @@
<span class="sourceLineNo">054</span> */<a name="line.54"></a>
<span class="sourceLineNo">055</span>@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)<a name="line.55"></a>
<span class="sourceLineNo">056</span>@InterfaceStability.Evolving<a name="line.56"></a>
-<span class="sourceLineNo">057</span>public class HQuorumPeer {<a name="line.57"></a>
-<span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span> /**<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * Parse ZooKeeper configuration from HBase XML config and run a QuorumPeer.<a name="line.60"></a>
-<span class="sourceLineNo">061</span> * @param args String[] of command line arguments. Not used.<a name="line.61"></a>
-<span class="sourceLineNo">062</span> */<a name="line.62"></a>
-<span class="sourceLineNo">063</span> public static void main(String[] args) {<a name="line.63"></a>
-<span class="sourceLineNo">064</span> Configuration conf = HBaseConfiguration.create();<a name="line.64"></a>
-<span class="sourceLineNo">065</span> try {<a name="line.65"></a>
-<span class="sourceLineNo">066</span> Properties zkProperties = ZKConfig.makeZKProps(conf);<a name="line.66"></a>
-<span class="sourceLineNo">067</span> writeMyID(zkProperties);<a name="line.67"></a>
-<span class="sourceLineNo">068</span> QuorumPeerConfig zkConfig = new QuorumPeerConfig();<a name="line.68"></a>
-<span class="sourceLineNo">069</span> zkConfig.parseProperties(zkProperties);<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span> // login the zookeeper server principal (if using security)<a name="line.71"></a>
-<span class="sourceLineNo">072</span> ZKUtil.loginServer(conf, HConstants.ZK_SERVER_KEYTAB_FILE,<a name="line.72"></a>
-<span class="sourceLineNo">073</span> HConstants.ZK_SERVER_KERBEROS_PRINCIPAL,<a name="line.73"></a>
-<span class="sourceLineNo">074</span> zkConfig.getClientPortAddress().getHostName());<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> runZKServer(zkConfig);<a name="line.76"></a>
-<span class="sourceLineNo">077</span> } catch (Exception e) {<a name="line.77"></a>
-<span class="sourceLineNo">078</span> e.printStackTrace();<a name="line.78"></a>
-<span class="sourceLineNo">079</span> System.exit(-1);<a name="line.79"></a>
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-<span class="sourceLineNo">081</span> }<a name="line.81"></a>
-<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span> private static void runZKServer(QuorumPeerConfig zkConfig) throws UnknownHostException, IOException {<a name="line.83"></a>
-<span class="sourceLineNo">084</span> if (zkConfig.isDistributed()) {<a name="line.84"></a>
-<span class="sourceLineNo">085</span> QuorumPeerMain qp = new QuorumPeerMain();<a name="line.85"></a>
-<span class="sourceLineNo">086</span> qp.runFromConfig(zkConfig);<a name="line.86"></a>
-<span class="sourceLineNo">087</span> } else {<a name="line.87"></a>
-<span class="sourceLineNo">088</span> ZooKeeperServerMain zk = new ZooKeeperServerMain();<a name="line.88"></a>
-<span class="sourceLineNo">089</span> ServerConfig serverConfig = new ServerConfig();<a name="line.89"></a>
-<span class="sourceLineNo">090</span> serverConfig.readFrom(zkConfig);<a name="line.90"></a>
-<span class="sourceLineNo">091</span> zk.runFromConfig(serverConfig);<a name="line.91"></a>
-<span class="sourceLineNo">092</span> }<a name="line.92"></a>
-<span class="sourceLineNo">093</span> }<a name="line.93"></a>
-<span class="sourceLineNo">094</span><a name="line.94"></a>
-<span class="sourceLineNo">095</span> private static boolean addressIsLocalHost(String address) {<a name="line.95"></a>
-<span class="sourceLineNo">096</span> return address.equals("localhost") || address.equals("127.0.0.1");<a name="line.96"></a>
-<span class="sourceLineNo">097</span> }<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span> static void writeMyID(Properties properties) throws IOException {<a name="line.99"></a>
-<span class="sourceLineNo">100</span> long myId = -1;<a name="line.100"></a>
+<span class="sourceLineNo">057</span>public final class HQuorumPeer {<a name="line.57"></a>
+<span class="sourceLineNo">058</span> private HQuorumPeer() {<a name="line.58"></a>
+<span class="sourceLineNo">059</span> }<a name="line.59"></a>
+<span class="sourceLineNo">060</span><a name="line.60"></a>
+<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * Parse ZooKeeper configuration from HBase XML config and run a QuorumPeer.<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * @param args String[] of command line arguments. Not used.<a name="line.63"></a>
+<span class="sourceLineNo">064</span> */<a name="line.64"></a>
+<span class="sourceLineNo">065</span> public static void main(String[] args) {<a name="line.65"></a>
+<span class="sourceLineNo">066</span> Configuration conf = HBaseConfiguration.create();<a name="line.66"></a>
+<span class="sourceLineNo">067</span> try {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> Properties zkProperties = ZKConfig.makeZKProps(conf);<a name="line.68"></a>
+<span class="sourceLineNo">069</span> writeMyID(zkProperties);<a name="line.69"></a>
+<span class="sourceLineNo">070</span> QuorumPeerConfig zkConfig = new QuorumPeerConfig();<a name="line.70"></a>
+<span class="sourceLineNo">071</span> zkConfig.parseProperties(zkProperties);<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span> // login the zookeeper server principal (if using security)<a name="line.73"></a>
+<span class="sourceLineNo">074</span> ZKUtil.loginServer(conf, HConstants.ZK_SERVER_KEYTAB_FILE,<a name="line.74"></a>
+<span class="sourceLineNo">075</span> HConstants.ZK_SERVER_KERBEROS_PRINCIPAL,<a name="line.75"></a>
+<span class="sourceLineNo">076</span> zkConfig.getClientPortAddress().getHostName());<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> runZKServer(zkConfig);<a name="line.78"></a>
+<span class="sourceLineNo">079</span> } catch (Exception e) {<a name="line.79"></a>
+<span class="sourceLineNo">080</span> e.printStackTrace();<a name="line.80"></a>
+<span class="sourceLineNo">081</span> System.exit(-1);<a name="line.81"></a>
+<span class="sourceLineNo">082</span> }<a name="line.82"></a>
+<span class="sourceLineNo">083</span> }<a name="line.83"></a>
+<span class="sourceLineNo">084</span><a name="line.84"></a>
+<span class="sourceLineNo">085</span> private static void runZKServer(QuorumPeerConfig zkConfig)<a name="line.85"></a>
+<span class="sourceLineNo">086</span> throws UnknownHostException, IOException {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> if (zkConfig.isDistributed()) {<a name="line.87"></a>
+<span class="sourceLineNo">088</span> QuorumPeerMain qp = new QuorumPeerMain();<a name="line.88"></a>
+<span class="sourceLineNo">089</span> qp.runFromConfig(zkConfig);<a name="line.89"></a>
+<span class="sourceLineNo">090</span> } else {<a name="line.90"></a>
+<span class="sourceLineNo">091</span> ZooKeeperServerMain zk = new ZooKeeperServerMain();<a name="line.91"></a>
+<span class="sourceLineNo">092</span> ServerConfig serverConfig = new ServerConfig();<a name="line.92"></a>
+<span class="sourceLineNo">093</span> serverConfig.readFrom(zkConfig);<a name="line.93"></a>
+<span class="sourceLineNo">094</span> zk.runFromConfig(serverConfig);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span><a name="line.97"></a>
+<span class="sourceLineNo">098</span> private static boolean addressIsLocalHost(String address) {<a name="line.98"></a>
+<span class="sourceLineNo">099</span> return address.equals("localhost") || address.equals("127.0.0.1");<a name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
<span class="sourceLineNo">101</span><a name="line.101"></a>
-<span class="sourceLineNo">102</span> Configuration conf = HBaseConfiguration.create();<a name="line.102"></a>
-<span class="sourceLineNo">103</span> String myAddress = Strings.domainNamePointerToHostName(DNS.getDefaultHost(<a name="line.103"></a>
-<span class="sourceLineNo">104</span> conf.get("hbase.zookeeper.dns.interface","default"),<a name="line.104"></a>
-<span class="sourceLineNo">105</span> conf.get("hbase.zookeeper.dns.nameserver","default")));<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span> List<String> ips = new ArrayList<>();<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> // Add what could be the best (configured) match<a name="line.109"></a>
-<span class="sourceLineNo">110</span> ips.add(myAddress.contains(".") ?<a name="line.110"></a>
-<span class="sourceLineNo">111</span> myAddress :<a name="line.111"></a>
-<span class="sourceLineNo">112</span> StringUtils.simpleHostname(myAddress));<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span> // For all nics get all hostnames and IPs<a name="line.114"></a>
-<span class="sourceLineNo">115</span> Enumeration<?> nics = NetworkInterface.getNetworkInterfaces();<a name="line.115"></a>
-<span class="sourceLineNo">116</span> while(nics.hasMoreElements()) {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> Enumeration<?> rawAdrs =<a name="line.117"></a>
-<span class="sourceLineNo">118</span> ((NetworkInterface)nics.nextElement()).getInetAddresses();<a name="line.118"></a>
-<span class="sourceLineNo">119</span> while(rawAdrs.hasMoreElements()) {<a name="line.119"></a>
-<span class="sourceLineNo">120</span> InetAddress inet = (InetAddress) rawAdrs.nextElement();<a name="line.120"></a>
-<span class="sourceLineNo">121</span> ips.add(StringUtils.simpleHostname(inet.getHostName()));<a name="line.121"></a>
-<span class="sourceLineNo">122</span> ips.add(inet.getHostAddress());<a name="line.122"></a>
-<span class="sourceLineNo">123</span> }<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> for (Entry<Object, Object> entry : properties.entrySet()) {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> String key = entry.getKey().toString().trim();<a name="line.127"></a>
-<span class="sourceLineNo">128</span> String value = entry.getValue().toString().trim();<a name="line.128"></a>
-<span class="sourceLineNo">129</span> if (key.startsWith("server.")) {<a name="line.129"></a>
-<span class="sourceLineNo">130</span> int dot = key.indexOf('.');<a name="line.130"></a>
-<span class="sourceLineNo">131</span> long id = Long.parseLong(key.substring(dot + 1));<a name="line.131"></a>
-<span class="sourceLineNo">132</span> String[] parts = value.split(":");<a name="line.132"></a>
-<span class="sourceLineNo">133</span> String address = parts[0];<a name="line.133"></a>
-<span class="sourceLineNo">134</span> if (addressIsLocalHost(address) || ips.contains(address)) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> myId = id;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> break;<a name="line.136"></a>
-<span class="sourceLineNo">137</span> }<a name="line.137"></a>
-<span class="sourceLineNo">138</span> }<a name="line.138"></a>
-<span class="sourceLineNo">139</span> }<a name="line.139"></a>
-<span class="sourceLineNo">140</span><a name="line.140"></a>
-<span class="sourceLineNo">141</span> // Set the max session timeout from the provided client-side timeout<a name="line.141"></a>
-<span class="sourceLineNo">142</span> properties.setProperty("maxSessionTimeout",<a name="line.142"></a>
-<span class="sourceLineNo">143</span> conf.get(HConstants.ZK_SESSION_TIMEOUT, Integer.toString(HConstants.DEFAULT_ZK_SESSION_TIMEOUT)));<a name="line.143"></a>
-<span class="sourceLineNo">144</span><a name="line.144"></a>
-<span class="sourceLineNo">145</span> if (myId == -1) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> throw new IOException("Could not find my address: " + myAddress +<a name="line.146"></a>
-<span class="sourceLineNo">147</span> " in list of ZooKeeper quorum servers");<a name="line.147"></a>
-<span class="sourceLineNo">148</span> }<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span> String dataDirStr = properties.get("dataDir").toString().trim();<a name="line.150"></a>
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-<span class="sourceLineNo">153</span> if (!dataDir.mkdirs()) {<a name="line.153"></a>
-<span class="sourceLineNo">154</span> throw new IOException("Unable to create data dir " + dataDir);<a name="line.154"></a>
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-<span class="sourceLineNo">156</span> }<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span> File myIdFile = new File(dataDir, "myid");<a name="line.158"></a>
-<span class="sourceLineNo">159</span> PrintWriter w = new PrintWriter(myIdFile, StandardCharsets.UTF_8.name());<a name="line.159"></a>
-<span class="sourceLineNo">160</span> w.println(myId);<a name="line.160"></a>
-<span class="sourceLineNo">161</span> w.close();<a name="line.161"></a>
-<span class="sourceLineNo">162</span> }<a name="line.162"></a>
-<span class="sourceLineNo">163</span>}<a name="line.163"></a>
+<span class="sourceLineNo">102</span> static void writeMyID(Properties properties) throws IOException {<a name="line.102"></a>
+<span class="sourceLineNo">103</span> long myId = -1;<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> Configuration conf = HBaseConfiguration.create();<a name="line.105"></a>
+<span class="sourceLineNo">106</span> String myAddress = Strings.domainNamePointerToHostName(DNS.getDefaultHost(<a name="line.106"></a>
+<span class="sourceLineNo">107</span> conf.get("hbase.zookeeper.dns.interface","default"),<a name="line.107"></a>
+<span class="sourceLineNo">108</span> conf.get("hbase.zookeeper.dns.nameserver","default")));<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span> List<String> ips = new ArrayList<>();<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span> // Add what could be the best (configured) match<a name="line.112"></a>
+<span class="sourceLineNo">113</span> ips.add(myAddress.contains(".") ?<a name="line.113"></a>
+<span class="sourceLineNo">114</span> myAddress :<a name="line.114"></a>
+<span class="sourceLineNo">115</span> StringUtils.simpleHostname(myAddress));<a name="line.115"></a>
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+<span class="sourceLineNo">118</span> Enumeration<?> nics = NetworkInterface.getNetworkInterfaces();<a name="line.118"></a>
+<span class="sourceLineNo">119</span> while(nics.hasMoreElements()) {<a name="line.119"></a>
+<span class="sourceLineNo">120</span> Enumeration<?> rawAdrs =<a name="line.120"></a>
+<span class="sourceLineNo">121</span> ((NetworkInterface)nics.nextElement()).getInetAddresses();<a name="line.121"></a>
+<span class="sourceLineNo">122</span> while(rawAdrs.hasMoreElements()) {<a name="line.122"></a>
+<span class="sourceLineNo">123</span> InetAddress inet = (InetAddress) rawAdrs.nextElement();<a name="line.123"></a>
+<span class="sourceLineNo">124</span> ips.add(StringUtils.simpleHostname(inet.getHostName()));<a name="line.124"></a>
+<span class="sourceLineNo">125</span> ips.add(inet.getHostAddress());<a name="line.125"></a>
+<span class="sourceLineNo">126</span> }<a name="line.126"></a>
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+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span> for (Entry<Object, Object> entry : properties.entrySet()) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> String key = entry.getKey().toString().trim();<a name="line.130"></a>
+<span class="sourceLineNo">131</span> String value = entry.getValue().toString().trim();<a name="line.131"></a>
+<span class="sourceLineNo">132</span> if (key.startsWith("server.")) {<a name="line.132"></a>
+<span class="sourceLineNo">133</span> int dot = key.indexOf('.');<a name="line.133"></a>
+<span class="sourceLineNo">134</span> long id = Long.parseLong(key.substring(dot + 1));<a name="line.134"></a>
+<span class="sourceLineNo">135</span> String[] parts = value.split(":");<a name="line.135"></a>
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+<span class="sourceLineNo">139</span> break;<a name="line.139"></a>
+<span class="sourceLineNo">140</span> }<a name="line.140"></a>
+<span class="sourceLineNo">141</span> }<a name="line.141"></a>
+<span class="sourceLineNo">142</span> }<a name="line.142"></a>
+<span class="sourceLineNo">143</span><a name="line.143"></a>
+<span class="sourceLineNo">144</span> // Set the max session timeout from the provided client-side timeout<a name="line.144"></a>
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+<span class="sourceLineNo">146</span> Integer.toString(HConstants.DEFAULT_ZK_SESSION_TIMEOUT)));<a name="line.146"></a>
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+<span class="sourceLineNo">155</span> if (!dataDir.isDirectory()) {<a name="line.155"></a>
+<span class="sourceLineNo">156</span> if (!dataDir.mkdirs()) {<a name="line.156"></a>
+<span class="sourceLineNo">157</span> throw new IOException("Unable to create data dir " + dataDir);<a name="line.157"></a>
+<span class="sourceLineNo">158</span> }<a name="line.158"></a>
+<span class="sourceLineNo">159</span> }<a name="line.159"></a>
+<span class="sourceLineNo">160</span><a name="line.160"></a>
+<span class="sourceLineNo">161</span> File myIdFile = new File(dataDir, "myid");<a name="line.161"></a>
+<span class="sourceLineNo">162</span> PrintWriter w = new PrintWriter(myIdFile, StandardCharsets.UTF_8.name());<a name="line.162"></a>
+<span class="sourceLineNo">163</span> w.println(myId);<a name="line.163"></a>
+<span class="sourceLineNo">164</span> w.close();<a name="line.164"></a>
+<span class="sourceLineNo">165</span> }<a name="line.165"></a>
+<span class="sourceLineNo">166</span>}<a name="line.166"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/48bd3915/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/LoadBalancerTracker.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/LoadBalancerTracker.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/LoadBalancerTracker.html
index f845ae6..3a74b61 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/LoadBalancerTracker.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/LoadBalancerTracker.html
@@ -29,77 +29,80 @@
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.apache.commons.logging.Log;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.apache.commons.logging.LogFactory;<a name="line.23"></a>
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-<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.Abortable;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.26"></a>
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-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LoadBalancerProtos;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.zookeeper.KeeperException;<a name="line.30"></a>
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-<span class="sourceLineNo">032</span>/**<a name="line.32"></a>
-<span class="sourceLineNo">033</span> * Tracks the load balancer state up in ZK<a name="line.33"></a>
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-<span class="sourceLineNo">035</span>@InterfaceAudience.Private<a name="line.35"></a>
-<span class="sourceLineNo">036</span>public class LoadBalancerTracker extends ZKNodeTracker {<a name="line.36"></a>
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-<span class="sourceLineNo">041</span> super(watcher, watcher.znodePaths.balancerZNode, abortable);<a name="line.41"></a>
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-<span class="sourceLineNo">044</span> /**<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * Return true if the balance switch is on, false otherwise<a name="line.45"></a>
-<span class="sourceLineNo">046</span> */<a name="line.46"></a>
-<span class="sourceLineNo">047</span> public boolean isBalancerOn() {<a name="line.47"></a>
-<span class="sourceLineNo">048</span> byte [] upData = super.getData(false);<a name="line.48"></a>
-<span class="sourceLineNo">049</span> try {<a name="line.49"></a>
-<span class="sourceLineNo">050</span> // if data in ZK is null, use default of on.<a name="line.50"></a>
-<span class="sourceLineNo">051</span> return upData == null || parseFrom(upData).getBalancerOn();<a name="line.51"></a>
-<span class="sourceLineNo">052</span> } catch (DeserializationException dex) {<a name="line.52"></a>
-<span class="sourceLineNo">053</span> LOG.error("ZK state for LoadBalancer could not be parsed " + Bytes.toStringBinary(upData));<a name="line.53"></a>
-<span class="sourceLineNo">054</span> // return false to be safe.<a name="line.54"></a>
-<span class="sourceLineNo">055</span> return false;<a name="line.55"></a>
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-<span class="sourceLineNo">062</span> * @throws KeeperException<a name="line.62"></a>
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-<span class="sourceLineNo">066</span> try {<a name="line.66"></a>
-<span class="sourceLineNo">067</span> ZKUtil.setData(watcher, watcher.znodePaths.balancerZNode, upData);<a name="line.67"></a>
-<span class="sourceLineNo">068</span> } catch(KeeperException.NoNodeException nne) {<a name="line.68"></a>
-<span class="sourceLineNo">069</span> ZKUtil.createAndWatch(watcher, watcher.znodePaths.balancerZNode, upData);<a name="line.69"></a>
-<span class="sourceLineNo">070</span> }<a name="line.70"></a>
-<span class="sourceLineNo">071</span> super.nodeDataChanged(watcher.znodePaths.balancerZNode);<a name="line.71"></a>
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-<span class="sourceLineNo">074</span> private byte [] toByteArray(boolean isBalancerOn) {<a name="line.74"></a>
-<span class="sourceLineNo">075</span> LoadBalancerProtos.LoadBalancerState.Builder builder =<a name="line.75"></a>
-<span class="sourceLineNo">076</span> LoadBalancerProtos.LoadBalancerState.newBuilder();<a name="line.76"></a>
-<span class="sourceLineNo">077</span> builder.setBalancerOn(isBalancerOn);<a name="line.77"></a>
-<span class="sourceLineNo">078</span> return ProtobufUtil.prependPBMagic(builder.build().toByteArray());<a name="line.78"></a>
-<span class="sourceLineNo">079</span> }<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> private LoadBalancerProtos.LoadBalancerState parseFrom(byte [] pbBytes)<a name="line.81"></a>
-<span class="sourceLineNo">082</span> throws DeserializationException {<a name="line.82"></a>
-<span class="sourceLineNo">083</span> ProtobufUtil.expectPBMagicPrefix(pbBytes);<a name="line.83"></a>
-<span class="sourceLineNo">084</span> LoadBalancerProtos.LoadBalancerState.Builder builder =<a name="line.84"></a>
-<span class="sourceLineNo">085</span> LoadBalancerProtos.LoadBalancerState.newBuilder();<a name="line.85"></a>
-<span class="sourceLineNo">086</span> try {<a name="line.86"></a>
-<span class="sourceLineNo">087</span> int magicLen = ProtobufUtil.lengthOfPBMagic();<a name="line.87"></a>
-<span class="sourceLineNo">088</span> ProtobufUtil.mergeFrom(builder, pbBytes, magicLen, pbBytes.length - magicLen);<a name="line.88"></a>
-<span class="sourceLineNo">089</span> } catch (IOException e) {<a name="line.89"></a>
-<span class="sourceLineNo">090</span> throw new DeserializationException(e);<a name="line.90"></a>
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-<span class="sourceLineNo">093</span> }<a name="line.93"></a>
-<span class="sourceLineNo">094</span>}<a name="line.94"></a>
+<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.Abortable;<a name="line.24"></a>
+<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.zookeeper.KeeperException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span><a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.LoadBalancerProtos;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>/**<a name="line.33"></a>
+<span class="sourceLineNo">034</span> * Tracks the load balancer state up in ZK<a name="line.34"></a>
+<span class="sourceLineNo">035</span> */<a name="line.35"></a>
+<span class="sourceLineNo">036</span>@InterfaceAudience.Private<a name="line.36"></a>
+<span class="sourceLineNo">037</span>public class LoadBalancerTracker extends ZKNodeTracker {<a name="line.37"></a>
+<span class="sourceLineNo">038</span> private static final Log LOG = LogFactory.getLog(LoadBalancerTracker.class);<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span> public LoadBalancerTracker(ZKWatcher watcher,<a name="line.40"></a>
+<span class="sourceLineNo">041</span> Abortable abortable) {<a name="line.41"></a>
+<span class="sourceLineNo">042</span> super(watcher, watcher.znodePaths.balancerZNode, abortable);<a name="line.42"></a>
+<span class="sourceLineNo">043</span> }<a name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
+<span class="sourceLineNo">045</span> /**<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * Return true if the balance switch is on, false otherwise<a name="line.46"></a>
+<span class="sourceLineNo">047</span> */<a name="line.47"></a>
+<span class="sourceLineNo">048</span> public boolean isBalancerOn() {<a name="line.48"></a>
+<span class="sourceLineNo">049</span> byte [] upData = super.getData(false);<a name="line.49"></a>
+<span class="sourceLineNo">050</span> try {<a name="line.50"></a>
+<span class="sourceLineNo">051</span> // if data in ZK is null, use default of on.<a name="line.51"></a>
+<span class="sourceLineNo">052</span> return upData == null || parseFrom(upData).getBalancerOn();<a name="line.52"></a>
+<span class="sourceLineNo">053</span> } catch (DeserializationException dex) {<a name="line.53"></a>
+<span class="sourceLineNo">054</span> LOG.error("ZK state for LoadBalancer could not be parsed " + Bytes.toStringBinary(upData));<a name="line.54"></a>
+<span class="sourceLineNo">055</span> // return false to be safe.<a name="line.55"></a>
+<span class="sourceLineNo">056</span> return false;<a name="line.56"></a>
+<span class="sourceLineNo">057</span> }<a name="line.57"></a>
+<span class="sourceLineNo">058</span> }<a name="line.58"></a>
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+<span class="sourceLineNo">060</span> /**<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * Set the balancer on/off.<a name="line.61"></a>
+<span class="sourceLineNo">062</span> *<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * @param balancerOn true if the balancher should be on, false otherwise<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.64"></a>
+<span class="sourceLineNo">065</span> */<a name="line.65"></a>
+<span class="sourceLineNo">066</span> public void setBalancerOn(boolean balancerOn) throws KeeperException {<a name="line.66"></a>
+<span class="sourceLineNo">067</span> byte [] upData = toByteArray(balancerOn);<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span> try {<a name="line.69"></a>
+<span class="sourceLineNo">070</span> ZKUtil.setData(watcher, watcher.znodePaths.balancerZNode, upData);<a name="line.70"></a>
+<span class="sourceLineNo">071</span> } catch(KeeperException.NoNodeException nne) {<a name="line.71"></a>
+<span class="sourceLineNo">072</span> ZKUtil.createAndWatch(watcher, watcher.znodePaths.balancerZNode, upData);<a name="line.72"></a>
+<span class="sourceLineNo">073</span> }<a name="line.73"></a>
+<span class="sourceLineNo">074</span> super.nodeDataChanged(watcher.znodePaths.balancerZNode);<a name="line.74"></a>
+<span class="sourceLineNo">075</span> }<a name="line.75"></a>
+<span class="sourceLineNo">076</span><a name="line.76"></a>
+<span class="sourceLineNo">077</span> private byte [] toByteArray(boolean isBalancerOn) {<a name="line.77"></a>
+<span class="sourceLineNo">078</span> LoadBalancerProtos.LoadBalancerState.Builder builder =<a name="line.78"></a>
+<span class="sourceLineNo">079</span> LoadBalancerProtos.LoadBalancerState.newBuilder();<a name="line.79"></a>
+<span class="sourceLineNo">080</span> builder.setBalancerOn(isBalancerOn);<a name="line.80"></a>
+<span class="sourceLineNo">081</span> return ProtobufUtil.prependPBMagic(builder.build().toByteArray());<a name="line.81"></a>
+<span class="sourceLineNo">082</span> }<a name="line.82"></a>
+<span class="sourceLineNo">083</span><a name="line.83"></a>
+<span class="sourceLineNo">084</span> private LoadBalancerProtos.LoadBalancerState parseFrom(byte [] pbBytes)<a name="line.84"></a>
+<span class="sourceLineNo">085</span> throws DeserializationException {<a name="line.85"></a>
+<span class="sourceLineNo">086</span> ProtobufUtil.expectPBMagicPrefix(pbBytes);<a name="line.86"></a>
+<span class="sourceLineNo">087</span> LoadBalancerProtos.LoadBalancerState.Builder builder =<a name="line.87"></a>
+<span class="sourceLineNo">088</span> LoadBalancerProtos.LoadBalancerState.newBuilder();<a name="line.88"></a>
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+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span>}<a name="line.97"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/48bd3915/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MasterAddressTracker.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MasterAddressTracker.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MasterAddressTracker.html
index de63140..dac1d61 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MasterAddressTracker.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/MasterAddressTracker.html
@@ -31,159 +31,159 @@
<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Abortable;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HConstants;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.ServerName;<a name="line.25"></a>
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-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.28"></a>
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-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.zookeeper.KeeperException;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.zookeeper.data.Stat;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException;<a name="line.33"></a>
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-<span class="sourceLineNo">098</span> * Return 0 if no backup master or zookeeper is unavailable<a name="line.98"></a>
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-<span class="sourceLineNo">178</span> IOException {<a name="line.178"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.zookeeper.KeeperException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.zookeeper.data.Stat;<a name="line.29"></a>
+<span class="sourceLineNo">030</span><a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.InvalidProtocolBufferException;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.34"></a>
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+<span class="sourceLineNo">036</span>/**<a name="line.36"></a>
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+<span class="sourceLineNo">038</span> * <p><a name="line.38"></a>
+<span class="sourceLineNo">039</span> * Listens for ZooKeeper events related to the master address. The node<a name="line.39"></a>
+<span class="sourceLineNo">040</span> * <code>/master</code> will contain the address of the current master.<a name="line.40"></a>
+<span class="sourceLineNo">041</span> * This listener is interested in<a name="line.41"></a>
+<span class="sourceLineNo">042</span> * <code>NodeDeleted</code> and <code>NodeCreated</code> events on<a name="line.42"></a>
+<span class="sourceLineNo">043</span> * <code>/master</code>.<a name="line.43"></a>
+<span class="sourceLineNo">044</span> * <p><a name="line.44"></a>
+<span class="sourceLineNo">045</span> * Utilizes {@link ZKNodeTracker} for zk interactions.<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * <p><a name="line.46"></a>
+<span class="sourceLineNo">047</span> * You can get the current master via {@link #getMasterAddress()} or via<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * {@link #getMasterAddress(ZKWatcher)} if you do not have a running<a name="line.48"></a>
+<span class="sourceLineNo">049</span> * instance of this Tracker in your context.<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * <p><a name="line.50"></a>
+<span class="sourceLineNo">051</span> * This class also includes utility for interacting with the master znode, for<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * writing and reading the znode content.<a name="line.52"></a>
+<span class="sourceLineNo">053</span> */<a name="line.53"></a>
+<span class="sourceLineNo">054</span>@InterfaceAudience.Private<a name="line.54"></a>
+<span class="sourceLineNo">055</span>public class MasterAddressTracker extends ZKNodeTracker {<a name="line.55"></a>
+<span class="sourceLineNo">056</span> /**<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * Construct a master address listener with the specified<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * <code>zookeeper</code> reference.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * <p><a name="line.59"></a>
+<span class="sourceLineNo">060</span> * This constructor does not trigger any actions, you must call methods<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * explicitly. Normally you will just want to execute {@link #start()} to<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * begin tracking of the master address.<a name="line.62"></a>
+<span class="sourceLineNo">063</span> *<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * @param watcher zk reference and watcher<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * @param abortable abortable in case of fatal error<a name="line.65"></a>
+<span class="sourceLineNo">066</span> */<a name="line.66"></a>
+<span class="sourceLineNo">067</span> public MasterAddressTracker(ZKWatcher watcher, Abortable abortable) {<a name="line.67"></a>
+<span class="sourceLineNo">068</span> super(watcher, watcher.znodePaths.masterAddressZNode, abortable);<a name="line.68"></a>
+<span class="sourceLineNo">069</span> }<a name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span> /**<a name="line.71"></a>
+<span class="sourceLineNo">072</span> * Get the address of the current master if one is available. Returns null<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * if no current master.<a name="line.73"></a>
+<span class="sourceLineNo">074</span> * @return Server name or null if timed out.<a name="line.74"></a>
+<span class="sourceLineNo">075</span> */<a name="line.75"></a>
+<span class="sourceLineNo">076</span> public ServerName getMasterAddress() {<a name="line.76"></a>
+<span class="sourceLineNo">077</span> return getMasterAddress(false);<a name="line.77"></a>
+<span class="sourceLineNo">078</span> }<a name="line.78"></a>
+<span class="sourceLineNo">079</span><a name="line.79"></a>
+<span class="sourceLineNo">080</span> /**<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * Get the info port of the current master of one is available.<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * Return 0 if no current master or zookeeper is unavailable<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * @return info port or 0 if timed out<a name="line.83"></a>
+<span class="sourceLineNo">084</span> */<a name="line.84"></a>
+<span class="sourceLineNo">085</span> public int getMasterInfoPort() {<a name="line.85"></a>
+<span class="sourceLineNo">086</span> try {<a name="line.86"></a>
+<span class="sourceLineNo">087</span> final ZooKeeperProtos.Master master = parse(this.getData(false));<a name="line.87"></a>
+<span class="sourceLineNo">088</span> if (master == null) {<a name="line.88"></a>
+<span class="sourceLineNo">089</span> return 0;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span> return master.getInfoPort();<a name="line.91"></a>
+<span class="sourceLineNo">092</span> } catch (DeserializationException e) {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> LOG.warn("Failed parse master zk node data", e);<a name="line.93"></a>
+<span class="sourceLineNo">094</span> return 0;<a name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span> }<a name="line.96"></a>
+<span class="sourceLineNo">097</span> /**<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * Get the info port of the backup master if it is available.<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * Return 0 if no backup master or zookeeper is unavailable<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * @param sn server name of backup master<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * @return info port or 0 if timed out or exceptions<a name="line.101"></a>
+<span class="sourceLineNo">102</span> */<a name="line.102"></a>
+<span class="sourceLineNo">103</span> public int getBackupMasterInfoPort(final ServerName sn) {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> String backupZNode = ZNodePaths.joinZNode(watcher.znodePaths.backupMasterAddressesZNode,<a name="line.104"></a>
+<span class="sourceLineNo">105</span> sn.toString());<a name="line.105"></a>
+<span class="sourceLineNo">106</span> try {<a name="line.106"></a>
+<span class="sourceLineNo">107</span> byte[] data = ZKUtil.getData(watcher, backupZNode);<a name="line.107"></a>
+<span class="sourceLineNo">108</span> final ZooKeeperProtos.Master backup = parse(data);<a name="line.108"></a>
+<span class="sourceLineNo">109</span> if (backup == null) {<a name="line.109"></a>
+<span class="sourceLineNo">110</span> return 0;<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span> return backup.getInfoPort();<a name="line.112"></a>
+<span class="sourceLineNo">113</span> } catch (Exception e) {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> LOG.warn("Failed to get backup master: " + sn + "'s info port.", e);<a name="line.114"></a>
+<span class="sourceLineNo">115</span> return 0;<a name="line.115"></a>
+<span class="sourceLineNo">116</span> }<a name="line.116"></a>
+<span class="sourceLineNo">117</span> }<a name="line.117"></a>
+<span class="sourceLineNo">118</span><a name="line.118"></a>
+<span class="sourceLineNo">119</span> /**<a name="line.119"></a>
+<span class="sourceLineNo">120</span> * Get the address of the current master if one is available. Returns null<a name="line.120"></a>
+<span class="sourceLineNo">121</span> * if no current master. If refresh is set, try to load the data from ZK again,<a name="line.121"></a>
+<span class="sourceLineNo">122</span> * otherwise, cached data will be used.<a name="line.122"></a>
+<span class="sourceLineNo">123</span> *<a name="line.123"></a>
+<span class="sourceLineNo">124</span> * @param refresh whether to refresh the data by calling ZK directly.<a name="line.124"></a>
+<span class="sourceLineNo">125</span> * @return Server name or null if timed out.<a name="line.125"></a>
+<span class="sourceLineNo">126</span> */<a name="line.126"></a>
+<span class="sourceLineNo">127</span> public ServerName getMasterAddress(final boolean refresh) {<a name="line.127"></a>
+<span class="sourceLineNo">128</span> try {<a name="line.128"></a>
+<span class="sourceLineNo">129</span> return ProtobufUtil.parseServerNameFrom(super.getData(refresh));<a name="line.129"></a>
+<span class="sourceLineNo">130</span> } catch (DeserializationException e) {<a name="line.130"></a>
+<span class="sourceLineNo">131</span> LOG.warn("Failed parse", e);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> return null;<a name="line.132"></a>
+<span class="sourceLineNo">133</span> }<a name="line.133"></a>
+<span class="sourceLineNo">134</span> }<a name="line.134"></a>
+<span class="sourceLineNo">135</span><a name="line.135"></a>
+<span class="sourceLineNo">136</span> /**<a name="line.136"></a>
+<span class="sourceLineNo">137</span> * Get master address.<a name="line.137"></a>
+<span class="sourceLineNo">138</span> * Use this instead of {@link #getMasterAddress()} if you do not have an<a name="line.138"></a>
+<span class="sourceLineNo">139</span> * instance of this tracker in your context.<a name="line.139"></a>
+<span class="sourceLineNo">140</span> * @param zkw ZKWatcher to use<a name="line.140"></a>
+<span class="sourceLineNo">141</span> * @return ServerName stored in the the master address znode or null if no<a name="line.141"></a>
+<span class="sourceLineNo">142</span> * znode present.<a name="line.142"></a>
+<span class="sourceLineNo">143</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.143"></a>
+<span class="sourceLineNo">144</span> * @throws IOException if the address of the ZooKeeper master cannot be retrieved<a name="line.144"></a>
+<span class="sourceLineNo">145</span> */<a name="line.145"></a>
+<span class="sourceLineNo">146</span> public static ServerName getMasterAddress(final ZKWatcher zkw)<a name="line.146"></a>
+<span class="sourceLineNo">147</span> throws KeeperException, IOException {<a name="line.147"></a>
+<span class="sourceLineNo">148</span> byte [] data;<a name="line.148"></a>
+<span class="sourceLineNo">149</span> try {<a name="line.149"></a>
+<span class="sourceLineNo">150</span> data = ZKUtil.getData(zkw, zkw.znodePaths.masterAddressZNode);<a name="line.150"></a>
+<span class="sourceLineNo">151</span> } catch (InterruptedException e) {<a name="line.151"></a>
+<span class="sourceLineNo">152</span> throw new InterruptedIOException();<a name="line.152"></a>
+<span class="sourceLineNo">153</span> }<a name="line.153"></a>
+<span class="sourceLineNo">154</span> // TODO javadoc claims we return null in this case. :/<a name="line.154"></a>
+<span class="sourceLineNo">155</span> if (data == null){<a name="line.155"></a>
+<span class="sourceLineNo">156</span> throw new IOException("Can't get master address from ZooKeeper; znode data == null");<a name="line.156"></a>
+<span class="sourceLineNo">157</span> }<a name="line.157"></a>
+<span class="sourceLineNo">158</span> try {<a name="line.158"></a>
+<span class="sourceLineNo">159</span> return ProtobufUtil.parseServerNameFrom(data);<a name="line.159"></a>
+<span class="sourceLineNo">160</span> } catch (DeserializationException e) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span> KeeperException ke = new KeeperException.DataInconsistencyException();<a name="line.161"></a>
+<span class="sourceLineNo">162</span> ke.initCause(e);<a name="line.162"></a>
+<span class="sourceLineNo">163</span> throw ke;<a name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span> }<a name="line.165"></a>
+<span class="sourceLineNo">166</span><a name="line.166"></a>
+<span class="sourceLineNo">167</span> /**<a name="line.167"></a>
+<span class="sourceLineNo">168</span> * Get master info port.<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * Use this instead of {@link #getMasterInfoPort()} if you do not have an<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * instance of this tracker in your context.<a name="line.170"></a>
+<span class="sourceLineNo">171</span> * @param zkw ZKWatcher to use<a name="line.171"></a>
+<span class="sourceLineNo">172</span> * @return master info port in the the master address znode or null if no<a name="line.172"></a>
+<span class="sourceLineNo">173</span> * znode present.<a name="line.173"></a>
+<span class="sourceLineNo">174</span> * // TODO can't return null for 'int' return type. non-static verison returns 0<a name="line.174"></a>
+<span class="sourceLineNo">175</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.175"></a>
+<span class="sourceLineNo">176</span> * @throws IOException if the address of the ZooKeeper master cannot be retrieved<a name="line.176"></a>
+<span class="sourceLineNo">177</span> */<a name="line.177"></a>
+<span class="sourceLineNo">178</span> public static int getMasterInfoPort(final ZKWatcher zkw) throws KeeperException, IOException {<a name="line.178"></a>
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<span class="sourceLineNo">180</span> try {<a name="line.180"></a>
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<span class="sourceLineNo">201</span> * path.<a name="line.201"></a>
<span class="sourceLineNo">202</span> * @param zkw The ZKWatcher to use.<a name="line.202"></a>
<span class="sourceLineNo">203</span> * @param znode Where to create the znode; could be at the top level or it<a name="line.203"></a>
-<span class="sourceLineNo">204</span> * could be under backup masters<a name="line.204"></a>
+<span class="sourceLineNo">204</span> * could be under backup masters<a name="line.204"></a>
<span class="sourceLineNo">205</span> * @param master ServerName of the current master must not be null.<a name="line.205"></a>
<span class="sourceLineNo">206</span> * @return true if node created, false if not; a watch is set in both cases<a name="line.206"></a>
-<span class="sourceLineNo">207</span> * @throws KeeperException<a name="line.207"></a>
+<span class="sourceLineNo">207</span> * @throws KeeperException if a ZooKeeper operation fails<a name="line.207"></a>
<span class="sourceLineNo">208</span> */<a name="line.208"></a>
<span class="sourceLineNo">209</span> public static boolean setMasterAddress(final ZKWatcher zkw,<a name="line.209"></a>
<span class="sourceLineNo">210</span> final String znode, final ServerName master, int infoPort)<a name="line.210"></a>
@@ -231,7 +231,7 @@
<span class="sourceLineNo">223</span> /**<a name="line.223"></a>
<span class="sourceLineNo">224</span> * @param sn must not be null<a name="line.224"></a>
<span class="sourceLineNo">225</span> * @return Content of the master znode as a serialized pb with the pb<a name="line.225"></a>
-<span class="sourceLineNo">226</span> * magic as prefix.<a name="line.226"></a>
+<span class="sourceLineNo">226</span> * magic as prefix.<a name="line.226"></a>
<span class="sourceLineNo">227</span> */<a name="line.227"></a>
<span class="sourceLineNo">228</span> static byte[] toByteArray(final ServerName sn, int infoPort) {<a name="line.228"></a>
<span class="sourceLineNo">229</span> ZooKeeperProtos.Master.Builder mbuilder = ZooKeeperProtos.Master.newBuilder();<a name="line.229"></a>
@@ -248,7 +248,7 @@
<span class="sourceLineNo">240</span> /**<a name="line.240"></a>
<span class="sourceLineNo">241</span> * @param data zookeeper data. may be null<a name="line.241"></a>
<span class="sourceLineNo">242</span> * @return pb object of master, null if no active master<a name="line.242"></a>
-<span class="sourceLineNo">243</span> * @throws DeserializationException<a name="line.243"></a>
+<span class="sourceLineNo">243</span> * @throws DeserializationException if the parsing fails<a name="line.243"></a>
<span class="sourceLineNo">244</span> */<a name="line.244"></a>
<span class="sourceLineNo">245</span> public static ZooKeeperProtos.Master parse(byte[] data) throws DeserializationException {<a name="line.245"></a>
<span class="sourceLineNo">246</span> if (data == null) {<a name="line.246"></a>