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Posted to commits@hbase.apache.org by gi...@apache.org on 2017/11/22 15:17:39 UTC
[18/22] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/34a201e5/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html
index 9435a32..74375dd 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html
@@ -36,240 +36,241 @@
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.io.IOException;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.util.concurrent.CompletableFuture;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.commons.lang3.mutable.MutableInt;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.commons.logging.Log;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.commons.logging.LogFactory;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.curator.framework.CuratorFramework;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.curator.framework.CuratorFrameworkFactory;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.curator.framework.api.BackgroundPathable;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.curator.framework.api.CuratorEvent;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.curator.retry.RetryNTimes;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.conf.Configuration;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.ServerName;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.50"></a>
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-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.zookeeper.ZKConfig;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.zookeeper.data.Stat;<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
+<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a>
+<span class="sourceLineNo">032</span><a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.commons.lang3.mutable.MutableInt;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.commons.logging.Log;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.commons.logging.LogFactory;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.curator.framework.CuratorFramework;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.curator.framework.CuratorFrameworkFactory;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.curator.framework.api.BackgroundPathable;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.curator.framework.api.CuratorEvent;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.curator.retry.RetryNTimes;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.ServerName;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.zookeeper.ZKConfig;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.zookeeper.data.Stat;<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>
-<span class="sourceLineNo">059</span> * Fetch the registry data from zookeeper.<a name="line.59"></a>
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-<span class="sourceLineNo">061</span>@InterfaceAudience.Private<a name="line.61"></a>
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-<span class="sourceLineNo">064</span> private static final Log LOG = LogFactory.getLog(ZKAsyncRegistry.class);<a name="line.64"></a>
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-<span class="sourceLineNo">068</span> private final ZNodePaths znodePaths;<a name="line.68"></a>
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-<span class="sourceLineNo">070</span> ZKAsyncRegistry(Configuration conf) {<a name="line.70"></a>
-<span class="sourceLineNo">071</span> this.znodePaths = new ZNodePaths(conf);<a name="line.71"></a>
-<span class="sourceLineNo">072</span> int zkSessionTimeout = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.72"></a>
-<span class="sourceLineNo">073</span> int zkRetry = conf.getInt("zookeeper.recovery.retry", 30);<a name="line.73"></a>
-<span class="sourceLineNo">074</span> int zkRetryIntervalMs = conf.getInt("zookeeper.recovery.retry.intervalmill", 1000);<a name="line.74"></a>
-<span class="sourceLineNo">075</span> this.zk = CuratorFrameworkFactory.builder()<a name="line.75"></a>
-<span class="sourceLineNo">076</span> .connectString(ZKConfig.getZKQuorumServersString(conf)).sessionTimeoutMs(zkSessionTimeout)<a name="line.76"></a>
-<span class="sourceLineNo">077</span> .retryPolicy(new RetryNTimes(zkRetry, zkRetryIntervalMs))<a name="line.77"></a>
-<span class="sourceLineNo">078</span> .threadFactory(<a name="line.78"></a>
-<span class="sourceLineNo">079</span> Threads.newDaemonThreadFactory(String.format("ZKClusterRegistry-0x%08x", hashCode())))<a name="line.79"></a>
-<span class="sourceLineNo">080</span> .build();<a name="line.80"></a>
-<span class="sourceLineNo">081</span> this.zk.start();<a name="line.81"></a>
-<span class="sourceLineNo">082</span> // TODO: temporary workaround for HBASE-19312, must be removed before 2.0.0 release!<a name="line.82"></a>
-<span class="sourceLineNo">083</span> try {<a name="line.83"></a>
-<span class="sourceLineNo">084</span> this.zk.blockUntilConnected();<a name="line.84"></a>
-<span class="sourceLineNo">085</span> } catch (InterruptedException e) {<a name="line.85"></a>
-<span class="sourceLineNo">086</span> return;<a name="line.86"></a>
-<span class="sourceLineNo">087</span> }<a name="line.87"></a>
-<span class="sourceLineNo">088</span> }<a name="line.88"></a>
-<span class="sourceLineNo">089</span><a name="line.89"></a>
-<span class="sourceLineNo">090</span> private interface CuratorEventProcessor<T> {<a name="line.90"></a>
-<span class="sourceLineNo">091</span> T process(CuratorEvent event) throws Exception;<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> private static <T> CompletableFuture<T> exec(BackgroundPathable<?> opBuilder, String path,<a name="line.94"></a>
-<span class="sourceLineNo">095</span> CuratorEventProcessor<T> processor) {<a name="line.95"></a>
-<span class="sourceLineNo">096</span> CompletableFuture<T> future = new CompletableFuture<>();<a name="line.96"></a>
-<span class="sourceLineNo">097</span> try {<a name="line.97"></a>
-<span class="sourceLineNo">098</span> opBuilder.inBackground((client, event) -> {<a name="line.98"></a>
-<span class="sourceLineNo">099</span> try {<a name="line.99"></a>
-<span class="sourceLineNo">100</span> future.complete(processor.process(event));<a name="line.100"></a>
-<span class="sourceLineNo">101</span> } catch (Exception e) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> future.completeExceptionally(e);<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span> }).withUnhandledErrorListener((msg, e) -> future.completeExceptionally(e)).forPath(path);<a name="line.104"></a>
-<span class="sourceLineNo">105</span> } catch (Exception e) {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> future.completeExceptionally(e);<a name="line.106"></a>
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-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span> private static String getClusterId(CuratorEvent event) throws DeserializationException {<a name="line.111"></a>
-<span class="sourceLineNo">112</span> byte[] data = event.getData();<a name="line.112"></a>
-<span class="sourceLineNo">113</span> if (data == null || data.length == 0) {<a name="line.113"></a>
-<span class="sourceLineNo">114</span> return null;<a name="line.114"></a>
-<span class="sourceLineNo">115</span> }<a name="line.115"></a>
-<span class="sourceLineNo">116</span> data = removeMetaData(data);<a name="line.116"></a>
-<span class="sourceLineNo">117</span> return ClusterId.parseFrom(data).toString();<a name="line.117"></a>
-<span class="sourceLineNo">118</span> }<a name="line.118"></a>
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-<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public CompletableFuture<String> getClusterId() {<a name="line.121"></a>
-<span class="sourceLineNo">122</span> return exec(zk.getData(), znodePaths.clusterIdZNode, ZKAsyncRegistry::getClusterId);<a name="line.122"></a>
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-<span class="sourceLineNo">125</span> @VisibleForTesting<a name="line.125"></a>
-<span class="sourceLineNo">126</span> CuratorFramework getCuratorFramework() {<a name="line.126"></a>
-<span class="sourceLineNo">127</span> return zk;<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> private static ZooKeeperProtos.MetaRegionServer getMetaProto(CuratorEvent event)<a name="line.130"></a>
-<span class="sourceLineNo">131</span> throws IOException {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> byte[] data = event.getData();<a name="line.132"></a>
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-<span class="sourceLineNo">136</span> data = removeMetaData(data);<a name="line.136"></a>
-<span class="sourceLineNo">137</span> int prefixLen = lengthOfPBMagic();<a name="line.137"></a>
-<span class="sourceLineNo">138</span> return ZooKeeperProtos.MetaRegionServer.parser().parseFrom(data, prefixLen,<a name="line.138"></a>
-<span class="sourceLineNo">139</span> data.length - prefixLen);<a name="line.139"></a>
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-<span class="sourceLineNo">144</span> remaining.decrement();<a name="line.144"></a>
-<span class="sourceLineNo">145</span> if (remaining.intValue() > 0) {<a name="line.145"></a>
-<span class="sourceLineNo">146</span> return;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> }<a name="line.147"></a>
-<span class="sourceLineNo">148</span> future.complete(new RegionLocations(locs));<a name="line.148"></a>
-<span class="sourceLineNo">149</span> }<a name="line.149"></a>
-<span class="sourceLineNo">150</span><a name="line.150"></a>
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-<span class="sourceLineNo">152</span> ZooKeeperProtos.MetaRegionServer proto) {<a name="line.152"></a>
-<span class="sourceLineNo">153</span> RegionState.State state;<a name="line.153"></a>
-<span class="sourceLineNo">154</span> if (proto.hasState()) {<a name="line.154"></a>
-<span class="sourceLineNo">155</span> state = RegionState.State.convert(proto.getState());<a name="line.155"></a>
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-<span class="sourceLineNo">157</span> state = RegionState.State.OPEN;<a name="line.157"></a>
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-<span class="sourceLineNo">159</span> HBaseProtos.ServerName snProto = proto.getServer();<a name="line.159"></a>
-<span class="sourceLineNo">160</span> return Pair.newPair(state,<a name="line.160"></a>
-<span class="sourceLineNo">161</span> ServerName.valueOf(snProto.getHostName(), snProto.getPort(), snProto.getStartCode()));<a name="line.161"></a>
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-<span class="sourceLineNo">165</span> public CompletableFuture<RegionLocations> getMetaRegionLocation() {<a name="line.165"></a>
-<span class="sourceLineNo">166</span> CompletableFuture<RegionLocations> future = new CompletableFuture<>();<a name="line.166"></a>
-<span class="sourceLineNo">167</span> HRegionLocation[] locs = new HRegionLocation[znodePaths.metaReplicaZNodes.size()];<a name="line.167"></a>
-<span class="sourceLineNo">168</span> MutableInt remaining = new MutableInt(locs.length);<a name="line.168"></a>
-<span class="sourceLineNo">169</span> znodePaths.metaReplicaZNodes.forEach((replicaId, path) -> {<a name="line.169"></a>
-<span class="sourceLineNo">170</span> if (replicaId == DEFAULT_REPLICA_ID) {<a name="line.170"></a>
-<span class="sourceLineNo">171</span> exec(zk.getData(), path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.171"></a>
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-<span class="sourceLineNo">176</span> if (proto == null) {<a name="line.176"></a>
-<span class="sourceLineNo">177</span> future.completeExceptionally(new IOException("Meta znode is null"));<a name="line.177"></a>
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-<span class="sourceLineNo">180</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.180"></a>
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-<span class="sourceLineNo">183</span> new IOException("Meta region is in state " + stateAndServerName.getFirst()));<a name="line.183"></a>
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-<span class="sourceLineNo">196</span> if (error != null) {<a name="line.196"></a>
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-<span class="sourceLineNo">200</span> LOG.warn("Meta znode for replica " + replicaId + " is null");<a name="line.200"></a>
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+<span class="sourceLineNo">263</span> zk.close();<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span>}<a name="line.265"></a>