You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/04 18:31:27 UTC
[07/23] hbase-site git commit: Published site at
2cf8af5bf1d501156cbb3b421cf75c1051ead7d9.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/32672884/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html
index 71571a9..8e67a32 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html
@@ -34,722 +34,770 @@
<span class="sourceLineNo">026</span>import java.util.Map;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.util.concurrent.CopyOnWriteArrayList;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.util.concurrent.CountDownLatch;<a name="line.28"></a>
-<span class="sourceLineNo">029</span><a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.commons.logging.Log;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.commons.logging.LogFactory;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.conf.Configuration;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.Abortable;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.AuthUtil;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HConstants;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ZooKeeperConnectionException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.security.Superusers;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.zookeeper.KeeperException;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.zookeeper.WatchedEvent;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.zookeeper.Watcher;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.zookeeper.ZooDefs.Ids;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.zookeeper.ZooDefs.Perms;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.zookeeper.data.ACL;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.zookeeper.data.Id;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.zookeeper.data.Stat;<a name="line.48"></a>
-<span class="sourceLineNo">049</span><a name="line.49"></a>
-<span class="sourceLineNo">050</span>/**<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * Acts as the single ZooKeeper Watcher. One instance of this is instantiated<a name="line.51"></a>
-<span class="sourceLineNo">052</span> * for each Master, RegionServer, and client process.<a name="line.52"></a>
-<span class="sourceLineNo">053</span> *<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * <p>This is the only class that implements {@link Watcher}. Other internal<a name="line.54"></a>
-<span class="sourceLineNo">055</span> * classes which need to be notified of ZooKeeper events must register with<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * the local instance of this watcher via {@link #registerListener}.<a name="line.56"></a>
-<span class="sourceLineNo">057</span> *<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * <p>This class also holds and manages the connection to ZooKeeper. Code to<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * deal with connection related events and exceptions are handled here.<a name="line.59"></a>
-<span class="sourceLineNo">060</span> */<a name="line.60"></a>
-<span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a>
-<span class="sourceLineNo">062</span>public class ZooKeeperWatcher implements Watcher, Abortable, Closeable {<a name="line.62"></a>
-<span class="sourceLineNo">063</span> private static final Log LOG = LogFactory.getLog(ZooKeeperWatcher.class);<a name="line.63"></a>
-<span class="sourceLineNo">064</span><a name="line.64"></a>
-<span class="sourceLineNo">065</span> // Identifier for this watcher (for logging only). It is made of the prefix<a name="line.65"></a>
-<span class="sourceLineNo">066</span> // passed on construction and the zookeeper sessionid.<a name="line.66"></a>
-<span class="sourceLineNo">067</span> private String prefix;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> private String identifier;<a name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span> // zookeeper quorum<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private String quorum;<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> // zookeeper connection<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private RecoverableZooKeeper recoverableZooKeeper;<a name="line.74"></a>
-<span class="sourceLineNo">075</span><a name="line.75"></a>
-<span class="sourceLineNo">076</span> // abortable in case of zk failure<a name="line.76"></a>
-<span class="sourceLineNo">077</span> protected Abortable abortable;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> // Used if abortable is null<a name="line.78"></a>
-<span class="sourceLineNo">079</span> private boolean aborted = false;<a name="line.79"></a>
-<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> // listeners to be notified<a name="line.81"></a>
-<span class="sourceLineNo">082</span> private final List<ZooKeeperListener> listeners =<a name="line.82"></a>
-<span class="sourceLineNo">083</span> new CopyOnWriteArrayList<ZooKeeperListener>();<a name="line.83"></a>
-<span class="sourceLineNo">084</span><a name="line.84"></a>
-<span class="sourceLineNo">085</span> // Used by ZKUtil:waitForZKConnectionIfAuthenticating to wait for SASL<a name="line.85"></a>
-<span class="sourceLineNo">086</span> // negotiation to complete<a name="line.86"></a>
-<span class="sourceLineNo">087</span> public CountDownLatch saslLatch = new CountDownLatch(1);<a name="line.87"></a>
-<span class="sourceLineNo">088</span><a name="line.88"></a>
-<span class="sourceLineNo">089</span> // node names<a name="line.89"></a>
+<span class="sourceLineNo">029</span>import java.util.regex.Matcher;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.regex.Pattern;<a name="line.30"></a>
+<span class="sourceLineNo">031</span><a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.commons.logging.Log;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.logging.LogFactory;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.Abortable;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.AuthUtil;<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.hadoop.hbase.HRegionInfo;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.ZooKeeperConnectionException;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.security.Superusers;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.zookeeper.KeeperException;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.zookeeper.WatchedEvent;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.zookeeper.Watcher;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.zookeeper.ZooDefs.Ids;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.zookeeper.ZooDefs.Perms;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.zookeeper.data.ACL;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.zookeeper.data.Id;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.zookeeper.data.Stat;<a name="line.50"></a>
+<span class="sourceLineNo">051</span><a name="line.51"></a>
+<span class="sourceLineNo">052</span>/**<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * Acts as the single ZooKeeper Watcher. One instance of this is instantiated<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * for each Master, RegionServer, and client process.<a name="line.54"></a>
+<span class="sourceLineNo">055</span> *<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * <p>This is the only class that implements {@link Watcher}. Other internal<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * classes which need to be notified of ZooKeeper events must register with<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * the local instance of this watcher via {@link #registerListener}.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> *<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * <p>This class also holds and manages the connection to ZooKeeper. Code to<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * deal with connection related events and exceptions are handled here.<a name="line.61"></a>
+<span class="sourceLineNo">062</span> */<a name="line.62"></a>
+<span class="sourceLineNo">063</span>@InterfaceAudience.Private<a name="line.63"></a>
+<span class="sourceLineNo">064</span>public class ZooKeeperWatcher implements Watcher, Abortable, Closeable {<a name="line.64"></a>
+<span class="sourceLineNo">065</span> private static final Log LOG = LogFactory.getLog(ZooKeeperWatcher.class);<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span> // Identifier for this watcher (for logging only). It is made of the prefix<a name="line.67"></a>
+<span class="sourceLineNo">068</span> // passed on construction and the zookeeper sessionid.<a name="line.68"></a>
+<span class="sourceLineNo">069</span> private String prefix;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> private String identifier;<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span> // zookeeper quorum<a name="line.72"></a>
+<span class="sourceLineNo">073</span> private String quorum;<a name="line.73"></a>
+<span class="sourceLineNo">074</span><a name="line.74"></a>
+<span class="sourceLineNo">075</span> // zookeeper connection<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private RecoverableZooKeeper recoverableZooKeeper;<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> // abortable in case of zk failure<a name="line.78"></a>
+<span class="sourceLineNo">079</span> protected Abortable abortable;<a name="line.79"></a>
+<span class="sourceLineNo">080</span> // Used if abortable is null<a name="line.80"></a>
+<span class="sourceLineNo">081</span> private boolean aborted = false;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span> // listeners to be notified<a name="line.83"></a>
+<span class="sourceLineNo">084</span> private final List<ZooKeeperListener> listeners =<a name="line.84"></a>
+<span class="sourceLineNo">085</span> new CopyOnWriteArrayList<ZooKeeperListener>();<a name="line.85"></a>
+<span class="sourceLineNo">086</span><a name="line.86"></a>
+<span class="sourceLineNo">087</span> // Used by ZKUtil:waitForZKConnectionIfAuthenticating to wait for SASL<a name="line.87"></a>
+<span class="sourceLineNo">088</span> // negotiation to complete<a name="line.88"></a>
+<span class="sourceLineNo">089</span> public CountDownLatch saslLatch = new CountDownLatch(1);<a name="line.89"></a>
<span class="sourceLineNo">090</span><a name="line.90"></a>
-<span class="sourceLineNo">091</span> // base znode for this cluster<a name="line.91"></a>
-<span class="sourceLineNo">092</span> public String baseZNode;<a name="line.92"></a>
-<span class="sourceLineNo">093</span> //znodes containing the locations of the servers hosting the meta replicas<a name="line.93"></a>
-<span class="sourceLineNo">094</span> private Map<Integer,String> metaReplicaZnodes = new HashMap<Integer, String>();<a name="line.94"></a>
-<span class="sourceLineNo">095</span> // znode containing ephemeral nodes of the regionservers<a name="line.95"></a>
-<span class="sourceLineNo">096</span> public String rsZNode;<a name="line.96"></a>
-<span class="sourceLineNo">097</span> // znode containing ephemeral nodes of the draining regionservers<a name="line.97"></a>
-<span class="sourceLineNo">098</span> public String drainingZNode;<a name="line.98"></a>
-<span class="sourceLineNo">099</span> // znode of currently active master<a name="line.99"></a>
-<span class="sourceLineNo">100</span> private String masterAddressZNode;<a name="line.100"></a>
-<span class="sourceLineNo">101</span> // znode of this master in backup master directory, if not the active master<a name="line.101"></a>
-<span class="sourceLineNo">102</span> public String backupMasterAddressesZNode;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> // znode containing the current cluster state<a name="line.103"></a>
-<span class="sourceLineNo">104</span> public String clusterStateZNode;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> // znode used for table disabling/enabling<a name="line.105"></a>
-<span class="sourceLineNo">106</span> @Deprecated<a name="line.106"></a>
-<span class="sourceLineNo">107</span> public String tableZNode;<a name="line.107"></a>
-<span class="sourceLineNo">108</span> // znode containing the unique cluster ID<a name="line.108"></a>
-<span class="sourceLineNo">109</span> public String clusterIdZNode;<a name="line.109"></a>
-<span class="sourceLineNo">110</span> // znode used for log splitting work assignment<a name="line.110"></a>
-<span class="sourceLineNo">111</span> public String splitLogZNode;<a name="line.111"></a>
-<span class="sourceLineNo">112</span> // znode containing the state of the load balancer<a name="line.112"></a>
-<span class="sourceLineNo">113</span> public String balancerZNode;<a name="line.113"></a>
-<span class="sourceLineNo">114</span> // znode containing the state of region normalizer<a name="line.114"></a>
-<span class="sourceLineNo">115</span> private String regionNormalizerZNode;<a name="line.115"></a>
-<span class="sourceLineNo">116</span> // znode containing the lock for the tables<a name="line.116"></a>
-<span class="sourceLineNo">117</span> public String tableLockZNode;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> // znode containing the state of recovering regions<a name="line.118"></a>
-<span class="sourceLineNo">119</span> public String recoveringRegionsZNode;<a name="line.119"></a>
-<span class="sourceLineNo">120</span> // znode containing namespace descriptors<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public static String namespaceZNode = "namespace";<a name="line.121"></a>
-<span class="sourceLineNo">122</span><a name="line.122"></a>
-<span class="sourceLineNo">123</span> public final static String META_ZNODE_PREFIX = "meta-region-server";<a name="line.123"></a>
+<span class="sourceLineNo">091</span> // node names<a name="line.91"></a>
+<span class="sourceLineNo">092</span><a name="line.92"></a>
+<span class="sourceLineNo">093</span> // base znode for this cluster<a name="line.93"></a>
+<span class="sourceLineNo">094</span> public String baseZNode;<a name="line.94"></a>
+<span class="sourceLineNo">095</span> //znodes containing the locations of the servers hosting the meta replicas<a name="line.95"></a>
+<span class="sourceLineNo">096</span> private Map<Integer,String> metaReplicaZnodes = new HashMap<Integer, String>();<a name="line.96"></a>
+<span class="sourceLineNo">097</span> // znode containing ephemeral nodes of the regionservers<a name="line.97"></a>
+<span class="sourceLineNo">098</span> public String rsZNode;<a name="line.98"></a>
+<span class="sourceLineNo">099</span> // znode containing ephemeral nodes of the draining regionservers<a name="line.99"></a>
+<span class="sourceLineNo">100</span> public String drainingZNode;<a name="line.100"></a>
+<span class="sourceLineNo">101</span> // znode of currently active master<a name="line.101"></a>
+<span class="sourceLineNo">102</span> private String masterAddressZNode;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> // znode of this master in backup master directory, if not the active master<a name="line.103"></a>
+<span class="sourceLineNo">104</span> public String backupMasterAddressesZNode;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> // znode containing the current cluster state<a name="line.105"></a>
+<span class="sourceLineNo">106</span> public String clusterStateZNode;<a name="line.106"></a>
+<span class="sourceLineNo">107</span> // znode used for table disabling/enabling<a name="line.107"></a>
+<span class="sourceLineNo">108</span> @Deprecated<a name="line.108"></a>
+<span class="sourceLineNo">109</span> public String tableZNode;<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // znode containing the unique cluster ID<a name="line.110"></a>
+<span class="sourceLineNo">111</span> public String clusterIdZNode;<a name="line.111"></a>
+<span class="sourceLineNo">112</span> // znode used for log splitting work assignment<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public String splitLogZNode;<a name="line.113"></a>
+<span class="sourceLineNo">114</span> // znode containing the state of the load balancer<a name="line.114"></a>
+<span class="sourceLineNo">115</span> public String balancerZNode;<a name="line.115"></a>
+<span class="sourceLineNo">116</span> // znode containing the state of region normalizer<a name="line.116"></a>
+<span class="sourceLineNo">117</span> private String regionNormalizerZNode;<a name="line.117"></a>
+<span class="sourceLineNo">118</span> // znode containing the lock for the tables<a name="line.118"></a>
+<span class="sourceLineNo">119</span> public String tableLockZNode;<a name="line.119"></a>
+<span class="sourceLineNo">120</span> // znode containing the state of recovering regions<a name="line.120"></a>
+<span class="sourceLineNo">121</span> public String recoveringRegionsZNode;<a name="line.121"></a>
+<span class="sourceLineNo">122</span> // znode containing namespace descriptors<a name="line.122"></a>
+<span class="sourceLineNo">123</span> public static String namespaceZNode = "namespace";<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
-<span class="sourceLineNo">125</span> private final Configuration conf;<a name="line.125"></a>
+<span class="sourceLineNo">125</span> public final static String META_ZNODE_PREFIX = "meta-region-server";<a name="line.125"></a>
<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span> private final Exception constructorCaller;<a name="line.127"></a>
+<span class="sourceLineNo">127</span> private final Configuration conf;<a name="line.127"></a>
<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span> /**<a name="line.129"></a>
-<span class="sourceLineNo">130</span> * Instantiate a ZooKeeper connection and watcher.<a name="line.130"></a>
-<span class="sourceLineNo">131</span> * @param identifier string that is passed to RecoverableZookeeper to be used as<a name="line.131"></a>
-<span class="sourceLineNo">132</span> * identifier for this instance. Use null for default.<a name="line.132"></a>
-<span class="sourceLineNo">133</span> * @throws IOException<a name="line.133"></a>
-<span class="sourceLineNo">134</span> * @throws ZooKeeperConnectionException<a name="line.134"></a>
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-<span class="sourceLineNo">136</span> public ZooKeeperWatcher(Configuration conf, String identifier,<a name="line.136"></a>
-<span class="sourceLineNo">137</span> Abortable abortable) throws ZooKeeperConnectionException, IOException {<a name="line.137"></a>
-<span class="sourceLineNo">138</span> this(conf, identifier, abortable, false);<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> /**<a name="line.141"></a>
-<span class="sourceLineNo">142</span> * Instantiate a ZooKeeper connection and watcher.<a name="line.142"></a>
-<span class="sourceLineNo">143</span> * @param conf<a name="line.143"></a>
-<span class="sourceLineNo">144</span> * @param identifier string that is passed to RecoverableZookeeper to be used as identifier for<a name="line.144"></a>
-<span class="sourceLineNo">145</span> * this instance. Use null for default.<a name="line.145"></a>
-<span class="sourceLineNo">146</span> * @param abortable Can be null if there is on error there is no host to abort: e.g. client<a name="line.146"></a>
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-<span class="sourceLineNo">148</span> * @param canCreateBaseZNode<a name="line.148"></a>
-<span class="sourceLineNo">149</span> * @throws IOException<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * @throws ZooKeeperConnectionException<a name="line.150"></a>
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-<span class="sourceLineNo">152</span> public ZooKeeperWatcher(Configuration conf, String identifier,<a name="line.152"></a>
-<span class="sourceLineNo">153</span> Abortable abortable, boolean canCreateBaseZNode)<a name="line.153"></a>
-<span class="sourceLineNo">154</span> throws IOException, ZooKeeperConnectionException {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> this.conf = conf;<a name="line.155"></a>
-<span class="sourceLineNo">156</span> // Capture a stack trace now. Will print it out later if problem so we can<a name="line.156"></a>
-<span class="sourceLineNo">157</span> // distingush amongst the myriad ZKWs.<a name="line.157"></a>
-<span class="sourceLineNo">158</span> try {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> throw new Exception("ZKW CONSTRUCTOR STACK TRACE FOR DEBUGGING");<a name="line.159"></a>
-<span class="sourceLineNo">160</span> } catch (Exception e) {<a name="line.160"></a>
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