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Posted to commits@hbase.apache.org by gi...@apache.org on 2019/05/11 14:50:13 UTC
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df278209588a8bf08b46f28d99a6fa903a0c825d.
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new 3812b0d Published site at df278209588a8bf08b46f28d99a6fa903a0c825d.
3812b0d is described below
commit 3812b0d80c8947e4f1c725dda24b27959f9182e3
Author: jenkins <bu...@apache.org>
AuthorDate: Sat May 11 14:49:49 2019 +0000
Published site at df278209588a8bf08b46f28d99a6fa903a0c825d.
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diff --git a/devapidocs/org/apache/hadoop/hbase/zookeeper/ZNodePaths.html b/devapidocs/org/apache/hadoop/hbase/zookeeper/ZNodePaths.html
index 69ff327..3445d70 100644
--- a/devapidocs/org/apache/hadoop/hbase/zookeeper/ZNodePaths.html
+++ b/devapidocs/org/apache/hadoop/hbase/zookeeper/ZNodePaths.html
@@ -618,7 +618,7 @@ public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/S
<div class="block">Parse the meta replicaId from the passed znode</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
-<dd><code>znode</code> - </dd>
+<dd><code>znode</code> - the name of the znode, does not include baseZNode</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>replicaId</dd>
</dl>
@@ -634,7 +634,7 @@ public final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/S
<div class="block">Is it the default meta replica's znode</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
-<dd><code>znode</code> - </dd>
+<dd><code>znode</code> - the name of the znode, does not include baseZNode</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true or false</dd>
</dl>
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/Version.html b/devapidocs/src-html/org/apache/hadoop/hbase/Version.html
index 5ae33c3..e9b5616 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/Version.html
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<span class="sourceLineNo">010</span> public static final String version = "3.0.0-SNAPSHOT";<a name="line.10"></a>
<span class="sourceLineNo">011</span> public static final String revision = "Unknown";<a name="line.11"></a>
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-<span class="sourceLineNo">013</span> public static final String date = "Fri May 10 14:35:25 UTC 2019";<a name="line.13"></a>
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<span class="sourceLineNo">014</span> public static final String url = "file:///home/jenkins/jenkins-slave/workspace/hbase_generate_website/hbase";<a name="line.14"></a>
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index a6570b0..5097375 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.Converter.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.Converter.html
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<span class="sourceLineNo">027</span><a name="line.27"></a>
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-<span class="sourceLineNo">223</span> .thenApply(proto -> proto != null ? proto.getInfoPort() : 0);<a name="line.223"></a>
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+<span class="sourceLineNo">197</span> CompletableFuture<RegionLocations> future = new CompletableFuture<>();<a name="line.197"></a>
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+<span class="sourceLineNo">200</span> .thenApply(children -> children.stream()<a name="line.200"></a>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html
index a6570b0..5097375 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html
@@ -34,208 +34,227 @@
<span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.zookeeper.ZKMetadata.removeMetaData;<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.io.IOException;<a name="line.28"></a>
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-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.ServerName;<a name="line.35"></a>
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-<span class="sourceLineNo">043</span>import org.slf4j.LoggerFactory;<a name="line.43"></a>
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+<span class="sourceLineNo">029</span>import java.util.List;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.CompletableFuture;<a name="line.30"></a>
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+<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.hadoop.conf.Configuration;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<a name="line.37"></a>
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+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient;<a name="line.41"></a>
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+<span class="sourceLineNo">043</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.slf4j.Logger;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.slf4j.LoggerFactory;<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
index aa0f061..669d56d 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.Task.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.Task.html
index 51a1259..d782768 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.Task.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.Task.html
@@ -32,335 +32,352 @@
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Arrays;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.EnumSet;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.concurrent.CompletableFuture;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.concurrent.DelayQueue;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.Delayed;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.concurrent.TimeUnit;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.concurrent.atomic.AtomicBoolean;<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.DoNotRetryIOException;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.FutureUtils;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.zookeeper.KeeperException;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.zookeeper.ZooKeeper;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.zookeeper.data.Stat;<a name="line.40"></a>
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-<span class="sourceLineNo">046</span>/**<a name="line.46"></a>
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-<span class="sourceLineNo">123</span><a name="line.123"></a>
-<span class="sourceLineNo">124</span> private String getId() {<a name="line.124"></a>
-<span class="sourceLineNo">125</span> return String.format("0x%08x", System.identityHashCode(this));<a name="line.125"></a>
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-<span class="sourceLineNo">129</span> // We might use a different ZK for client access<a name="line.129"></a>
-<span class="sourceLineNo">130</span> String clientZkQuorumServers = ZKConfig.getClientZKQuorumServersString(conf);<a name="line.130"></a>
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-<span class="sourceLineNo">132</span> this.connectString = clientZkQuorumServers;<a name="line.132"></a>
-<span class="sourceLineNo">133</span> } else {<a name="line.133"></a>
-<span class="sourceLineNo">134</span> this.connectString = ZKConfig.getZKQuorumServersString(conf);<a name="line.134"></a>
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-<span class="sourceLineNo">136</span> this.sessionTimeoutMs = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.136"></a>
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-<span class="sourceLineNo">139</span> conf.getInt(RECOVERY_RETRY_INTERVAL_MILLIS, DEFAULT_RECOVERY_RETRY_INTERVAL_MILLIS);<a name="line.139"></a>
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-<span class="sourceLineNo">145</span> Threads.setDaemonThreadRunning(new Thread(this::run),<a name="line.145"></a>
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+<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.CompletableFuture;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.DelayQueue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.Delayed;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.FutureUtils;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.zookeeper.KeeperException;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.zookeeper.ZooKeeper;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.zookeeper.data.Stat;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.slf4j.Logger;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.slf4j.LoggerFactory;<a name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
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+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>/**<a name="line.47"></a>
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+<span class="sourceLineNo">114</span> };<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
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+<span class="sourceLineNo">118</span> private final AtomicBoolean closed = new AtomicBoolean(false);<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
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+<span class="sourceLineNo">121</span> ZooKeeper zookeeper;<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> private int pendingRequests = 0;<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
+<span class="sourceLineNo">125</span> private String getId() {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> return String.format("0x%08x", System.identityHashCode(this));<a name="line.126"></a>
+<span class="sourceLineNo">127</span> }<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span> public ReadOnlyZKClient(Configuration conf) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> // We might use a different ZK for client access<a name="line.130"></a>
+<span class="sourceLineNo">131</span> String clientZkQuorumServers = ZKConfig.getClientZKQuorumServersString(conf);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> if (clientZkQuorumServers != null) {<a name="line.132"></a>
+<span class="sourceLineNo">133</span> this.connectString = clientZkQuorumServers;<a name="line.133"></a>
+<span class="sourceLineNo">134</span> } else {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> this.connectString = ZKConfig.getZKQuorumServersString(conf);<a name="line.135"></a>
+<span class="sourceLineNo">136</span> }<a name="line.136"></a>
+<span class="sourceLineNo">137</span> this.sessionTimeoutMs = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.137"></a>
+<span class="sourceLineNo">138</span> this.maxRetries = conf.getInt(RECOVERY_RETRY, DEFAULT_RECOVERY_RETRY);<a name="line.138"></a>
+<span class="sourceLineNo">139</span> this.retryIntervalMs =<a name="line.139"></a>
+<span class="sourceLineNo">140</span> conf.getInt(RECOVERY_RETRY_INTERVAL_MILLIS, DEFAULT_RECOVERY_RETRY_INTERVAL_MILLIS);<a name="line.140"></a>
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+<span class="sourceLineNo">142</span> LOG.debug(<a name="line.142"></a>
+<span class="sourceLineNo">143</span> "Connect {} to {} with session timeout={}ms, retries {}, " +<a name="line.143"></a>
+<span class="sourceLineNo">144</span> "retry interval {}ms, keepAlive={}ms",<a name="line.144"></a>
+<span class="sourceLineNo">145</span> getId(), connectString, sessionTimeoutMs, maxRetries, retryIntervalMs, keepAliveTimeMs);<a name="line.145"></a>
+<span class="sourceLineNo">146</span> Threads.setDaemonThreadRunning(new Thread(this::run),<a name="line.146"></a>
+<span class="sourceLineNo">147</span> "ReadOnlyZKClient-" + connectString + "@" + getId());<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>
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+<span class="sourceLineNo">165</span><a name="line.165"></a>
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+<span class="sourceLineNo">176</span> if (errorIfNoNode) {<a name="line.176"></a>
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+<span class="sourceLineNo">178</span> } else {<a name="line.178"></a>
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+<span class="sourceLineNo">182</span> future.completeExceptionally(KeeperException.create(code, path));<a name="line.182"></a>
+<span class="sourceLineNo">183</span> } else {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> if (code == Code.SESSIONEXPIRED) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span> LOG.warn("{} to {} session expired, close and reconnect", getId(), connectString);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> try {<a name="line.186"></a>
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+<span class="sourceLineNo">241</span> LOG.warn("{} to {} failed to connect to zk fo {} of {}, retries = {}", getId(),<a name="line.241"></a>
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+<span class="sourceLineNo">253</span> future.completeExceptionally(e);<a name="line.253"></a>
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+<span class="sourceLineNo">255</span> }<a name="line.255"></a>
+<span class="sourceLineNo">256</span><a name="line.256"></a>
+<span class="sourceLineNo">257</span> public CompletableFuture<byte[]> get(String path) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span> if (closed.get()) {<a name="line.258"></a>
+<span class="sourceLineNo">259</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.259"></a>
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+<span class="sourceLineNo">267</span> (rc, path, ctx, data, stat) -> onComplete(zk, rc, data, true), null);<a name="line.267"></a>
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+<span class="sourceLineNo">274</span> if (closed.get()) {<a name="line.274"></a>
+<span class="sourceLineNo">275</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.275"></a>
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+<span class="sourceLineNo">289</span> if (closed.get()) {<a name="line.289"></a>
+<span class="sourceLineNo">290</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.290"></a>
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+<span class="sourceLineNo">313</span><a name="line.313"></a>
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+<span class="sourceLineNo">316</span> if (zookeeper == null || !zookeeper.getState().isAlive()) {<a name="line.316"></a>
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+<span class="sourceLineNo">335</span> LOG.trace("{} to {} inactive for {}ms; closing (Will reconnect when new requests)",<a name="line.335"></a>
+<span class="sourceLineNo">336</span> getId(), connectString, keepAliveTimeMs);<a name="line.336"></a>
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+<span class="sourceLineNo">344</span> ZooKeeper zk;<a name="line.344"></a>
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+<span class="sourceLineNo">346</span> zk = getZk();<a name="line.346"></a>
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+<span class="sourceLineNo">354</span> closeZk();<a name="line.354"></a>
+<span class="sourceLineNo">355</span> DoNotRetryIOException error = new DoNotRetryIOException("Client already closed");<a name="line.355"></a>
+<span class="sourceLineNo">356</span> Arrays.stream(tasks.toArray(new Task[0])).forEach(t -> t.closed(error));<a name="line.356"></a>
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+<span class="sourceLineNo">362</span> if (closed.compareAndSet(false, true)) {<a name="line.362"></a>
+<span class="sourceLineNo">363</span> LOG.debug("Close zookeeper connection {} to {}", getId(), connectString);<a name="line.363"></a>
+<span class="sourceLineNo">364</span> tasks.add(CLOSE);<a name="line.364"></a>
+<span class="sourceLineNo">365</span> }<a name="line.365"></a>
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+<span class="sourceLineNo">368</span> @VisibleForTesting<a name="line.368"></a>
+<span class="sourceLineNo">369</span> public String getConnectString() {<a name="line.369"></a>
+<span class="sourceLineNo">370</span> return connectString;<a name="line.370"></a>
+<span class="sourceLineNo">371</span> }<a name="line.371"></a>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.ZKTask.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.ZKTask.html
index 51a1259..d782768 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.ZKTask.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.ZKTask.html
@@ -32,335 +32,352 @@
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Arrays;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.EnumSet;<a name="line.26"></a>
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-<span class="sourceLineNo">338</span> DoNotRetryIOException error = new DoNotRetryIOException("Client already closed");<a name="line.338"></a>
-<span class="sourceLineNo">339</span> Arrays.stream(tasks.toArray(new Task[0])).forEach(t -> t.closed(error));<a name="line.339"></a>
-<span class="sourceLineNo">340</span> tasks.clear();<a name="line.340"></a>
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-<span class="sourceLineNo">355</span>}<a name="line.355"></a>
+<span class="sourceLineNo">027</span>import java.util.List;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.concurrent.CompletableFuture;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.concurrent.DelayQueue;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.concurrent.Delayed;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.FutureUtils;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.zookeeper.KeeperException;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.zookeeper.ZooKeeper;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.zookeeper.data.Stat;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.slf4j.Logger;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.slf4j.LoggerFactory;<a name="line.43"></a>
+<span class="sourceLineNo">044</span><a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span>/**<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * A very simple read only zookeeper implementation without watcher support.<a name="line.48"></a>
+<span class="sourceLineNo">049</span> */<a name="line.49"></a>
+<span class="sourceLineNo">050</span>@InterfaceAudience.Private<a name="line.50"></a>
+<span class="sourceLineNo">051</span>public final class ReadOnlyZKClient implements Closeable {<a name="line.51"></a>
+<span class="sourceLineNo">052</span><a name="line.52"></a>
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+<span class="sourceLineNo">056</span><a name="line.56"></a>
+<span class="sourceLineNo">057</span> private static final int DEFAULT_RECOVERY_RETRY = 30;<a name="line.57"></a>
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+<span class="sourceLineNo">060</span> "zookeeper.recovery.retry.intervalmill";<a name="line.60"></a>
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+<span class="sourceLineNo">063</span><a name="line.63"></a>
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+<span class="sourceLineNo">067</span><a name="line.67"></a>
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+<span class="sourceLineNo">106</span><a name="line.106"></a>
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+<span class="sourceLineNo">108</span> public long getDelay(TimeUnit unit) {<a name="line.108"></a>
+<span class="sourceLineNo">109</span> return unit.convert(time - System.nanoTime(), TimeUnit.NANOSECONDS);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> }<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span> private static final Task CLOSE = new Task() {<a name="line.113"></a>
+<span class="sourceLineNo">114</span> };<a name="line.114"></a>
+<span class="sourceLineNo">115</span><a name="line.115"></a>
+<span class="sourceLineNo">116</span> private final DelayQueue<Task> tasks = new DelayQueue<>();<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> private final AtomicBoolean closed = new AtomicBoolean(false);<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
+<span class="sourceLineNo">120</span> @VisibleForTesting<a name="line.120"></a>
+<span class="sourceLineNo">121</span> ZooKeeper zookeeper;<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span> private int pendingRequests = 0;<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
+<span class="sourceLineNo">125</span> private String getId() {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> return String.format("0x%08x", System.identityHashCode(this));<a name="line.126"></a>
+<span class="sourceLineNo">127</span> }<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span> public ReadOnlyZKClient(Configuration conf) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span> // We might use a different ZK for client access<a name="line.130"></a>
+<span class="sourceLineNo">131</span> String clientZkQuorumServers = ZKConfig.getClientZKQuorumServersString(conf);<a name="line.131"></a>
+<span class="sourceLineNo">132</span> if (clientZkQuorumServers != null) {<a name="line.132"></a>
+<span class="sourceLineNo">133</span> this.connectString = clientZkQuorumServers;<a name="line.133"></a>
+<span class="sourceLineNo">134</span> } else {<a name="line.134"></a>
+<span class="sourceLineNo">135</span> this.connectString = ZKConfig.getZKQuorumServersString(conf);<a name="line.135"></a>
+<span class="sourceLineNo">136</span> }<a name="line.136"></a>
+<span class="sourceLineNo">137</span> this.sessionTimeoutMs = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.137"></a>
+<span class="sourceLineNo">138</span> this.maxRetries = conf.getInt(RECOVERY_RETRY, DEFAULT_RECOVERY_RETRY);<a name="line.138"></a>
+<span class="sourceLineNo">139</span> this.retryIntervalMs =<a name="line.139"></a>
+<span class="sourceLineNo">140</span> conf.getInt(RECOVERY_RETRY_INTERVAL_MILLIS, DEFAULT_RECOVERY_RETRY_INTERVAL_MILLIS);<a name="line.140"></a>
+<span class="sourceLineNo">141</span> this.keepAliveTimeMs = conf.getInt(KEEPALIVE_MILLIS, DEFAULT_KEEPALIVE_MILLIS);<a name="line.141"></a>
+<span class="sourceLineNo">142</span> LOG.debug(<a name="line.142"></a>
+<span class="sourceLineNo">143</span> "Connect {} to {} with session timeout={}ms, retries {}, " +<a name="line.143"></a>
+<span class="sourceLineNo">144</span> "retry interval {}ms, keepAlive={}ms",<a name="line.144"></a>
+<span class="sourceLineNo">145</span> getId(), connectString, sessionTimeoutMs, maxRetries, retryIntervalMs, keepAliveTimeMs);<a name="line.145"></a>
+<span class="sourceLineNo">146</span> Threads.setDaemonThreadRunning(new Thread(this::run),<a name="line.146"></a>
+<span class="sourceLineNo">147</span> "ReadOnlyZKClient-" + connectString + "@" + getId());<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>
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+<span class="sourceLineNo">153</span><a name="line.153"></a>
+<span class="sourceLineNo">154</span> private final CompletableFuture<T> future;<a name="line.154"></a>
+<span class="sourceLineNo">155</span><a name="line.155"></a>
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+<span class="sourceLineNo">165</span><a name="line.165"></a>
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+<span class="sourceLineNo">181</span> } else if (FAIL_FAST_CODES.contains(code)) {<a name="line.181"></a>
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+<span class="sourceLineNo">183</span> } else {<a name="line.183"></a>
+<span class="sourceLineNo">184</span> if (code == Code.SESSIONEXPIRED) {<a name="line.184"></a>
+<span class="sourceLineNo">185</span> LOG.warn("{} to {} session expired, close and reconnect", getId(), connectString);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> try {<a name="line.186"></a>
+<span class="sourceLineNo">187</span> zk.close();<a name="line.187"></a>
+<span class="sourceLineNo">188</span> } catch (InterruptedException e) {<a name="line.188"></a>
+<span class="sourceLineNo">189</span> }<a name="line.189"></a>
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+<span class="sourceLineNo">191</span> if (ZKTask.this.delay(retryIntervalMs, maxRetries)) {<a name="line.191"></a>
+<span class="sourceLineNo">192</span> LOG.warn("{} to {} failed for {} of {}, code = {}, retries = {}", getId(),<a name="line.192"></a>
+<span class="sourceLineNo">193</span> connectString, operationType, path, code, ZKTask.this.retries);<a name="line.193"></a>
+<span class="sourceLineNo">194</span> tasks.add(ZKTask.this);<a name="line.194"></a>
+<span class="sourceLineNo">195</span> } else {<a name="line.195"></a>
+<span class="sourceLineNo">196</span> LOG.warn("{} to {} failed for {} of {}, code = {}, retries = {}, give up", getId(),<a name="line.196"></a>
+<span class="sourceLineNo">197</span> connectString, operationType, path, code, ZKTask.this.retries);<a name="line.197"></a>
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+<span class="sourceLineNo">203</span> @Override<a name="line.203"></a>
+<span class="sourceLineNo">204</span> public void closed(IOException e) {<a name="line.204"></a>
+<span class="sourceLineNo">205</span> // It may happen that a request is succeeded and the onComplete has been called and pushed<a name="line.205"></a>
+<span class="sourceLineNo">206</span> // us into the task queue, but before we get called a close is called and here we will<a name="line.206"></a>
+<span class="sourceLineNo">207</span> // fail the request, although it is succeeded actually.<a name="line.207"></a>
+<span class="sourceLineNo">208</span> // This is not a perfect solution but anyway, it is better than hang the requests for<a name="line.208"></a>
+<span class="sourceLineNo">209</span> // ever, and also acceptable as if you close the zk client before actually getting the<a name="line.209"></a>
+<span class="sourceLineNo">210</span> // response then a failure is always possible.<a name="line.210"></a>
+<span class="sourceLineNo">211</span> future.completeExceptionally(e);<a name="line.211"></a>
+<span class="sourceLineNo">212</span> }<a name="line.212"></a>
+<span class="sourceLineNo">213</span> });<a name="line.213"></a>
+<span class="sourceLineNo">214</span> }<a name="line.214"></a>
+<span class="sourceLineNo">215</span><a name="line.215"></a>
+<span class="sourceLineNo">216</span> @Override<a name="line.216"></a>
+<span class="sourceLineNo">217</span> public boolean needZk() {<a name="line.217"></a>
+<span class="sourceLineNo">218</span> return true;<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span><a name="line.220"></a>
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+<span class="sourceLineNo">222</span><a name="line.222"></a>
+<span class="sourceLineNo">223</span> @Override<a name="line.223"></a>
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+<span class="sourceLineNo">225</span> pendingRequests++;<a name="line.225"></a>
+<span class="sourceLineNo">226</span> doExec(zk);<a name="line.226"></a>
+<span class="sourceLineNo">227</span> }<a name="line.227"></a>
+<span class="sourceLineNo">228</span><a name="line.228"></a>
+<span class="sourceLineNo">229</span> public boolean delay(long intervalMs, int maxRetries) {<a name="line.229"></a>
+<span class="sourceLineNo">230</span> if (retries >= maxRetries) {<a name="line.230"></a>
+<span class="sourceLineNo">231</span> return false;<a name="line.231"></a>
+<span class="sourceLineNo">232</span> }<a name="line.232"></a>
+<span class="sourceLineNo">233</span> retries++;<a name="line.233"></a>
+<span class="sourceLineNo">234</span> time = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(intervalMs);<a name="line.234"></a>
+<span class="sourceLineNo">235</span> return true;<a name="line.235"></a>
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+<span class="sourceLineNo">237</span><a name="line.237"></a>
+<span class="sourceLineNo">238</span> @Override<a name="line.238"></a>
+<span class="sourceLineNo">239</span> public void connectFailed(IOException e) {<a name="line.239"></a>
+<span class="sourceLineNo">240</span> if (delay(retryIntervalMs, maxRetries)) {<a name="line.240"></a>
+<span class="sourceLineNo">241</span> LOG.warn("{} to {} failed to connect to zk fo {} of {}, retries = {}", getId(),<a name="line.241"></a>
+<span class="sourceLineNo">242</span> connectString, operationType, path, retries, e);<a name="line.242"></a>
+<span class="sourceLineNo">243</span> tasks.add(this);<a name="line.243"></a>
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+<span class="sourceLineNo">245</span> LOG.warn("{} to {} failed to connect to zk fo {} of {}, retries = {}, give up", getId(),<a name="line.245"></a>
+<span class="sourceLineNo">246</span> connectString, operationType, path, retries, e);<a name="line.246"></a>
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+<span class="sourceLineNo">255</span> }<a name="line.255"></a>
+<span class="sourceLineNo">256</span><a name="line.256"></a>
+<span class="sourceLineNo">257</span> public CompletableFuture<byte[]> get(String path) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span> if (closed.get()) {<a name="line.258"></a>
+<span class="sourceLineNo">259</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.259"></a>
+<span class="sourceLineNo">260</span> }<a name="line.260"></a>
+<span class="sourceLineNo">261</span> CompletableFuture<byte[]> future = new CompletableFuture<>();<a name="line.261"></a>
+<span class="sourceLineNo">262</span> tasks.add(new ZKTask<byte[]>(path, future, "get") {<a name="line.262"></a>
+<span class="sourceLineNo">263</span><a name="line.263"></a>
+<span class="sourceLineNo">264</span> @Override<a name="line.264"></a>
+<span class="sourceLineNo">265</span> protected void doExec(ZooKeeper zk) {<a name="line.265"></a>
+<span class="sourceLineNo">266</span> zk.getData(path, false,<a name="line.266"></a>
+<span class="sourceLineNo">267</span> (rc, path, ctx, data, stat) -> onComplete(zk, rc, data, true), null);<a name="line.267"></a>
+<span class="sourceLineNo">268</span> }<a name="line.268"></a>
+<span class="sourceLineNo">269</span> });<a name="line.269"></a>
+<span class="sourceLineNo">270</span> return future;<a name="line.270"></a>
+<span class="sourceLineNo">271</span> }<a name="line.271"></a>
+<span class="sourceLineNo">272</span><a name="line.272"></a>
+<span class="sourceLineNo">273</span> public CompletableFuture<Stat> exists(String path) {<a name="line.273"></a>
+<span class="sourceLineNo">274</span> if (closed.get()) {<a name="line.274"></a>
+<span class="sourceLineNo">275</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.275"></a>
+<span class="sourceLineNo">276</span> }<a name="line.276"></a>
+<span class="sourceLineNo">277</span> CompletableFuture<Stat> future = new CompletableFuture<>();<a name="line.277"></a>
+<span class="sourceLineNo">278</span> tasks.add(new ZKTask<Stat>(path, future, "exists") {<a name="line.278"></a>
+<span class="sourceLineNo">279</span><a name="line.279"></a>
+<span class="sourceLineNo">280</span> @Override<a name="line.280"></a>
+<span class="sourceLineNo">281</span> protected void doExec(ZooKeeper zk) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> zk.exists(path, false, (rc, path, ctx, stat) -> onComplete(zk, rc, stat, false), null);<a name="line.282"></a>
+<span class="sourceLineNo">283</span> }<a name="line.283"></a>
+<span class="sourceLineNo">284</span> });<a name="line.284"></a>
+<span class="sourceLineNo">285</span> return future;<a name="line.285"></a>
+<span class="sourceLineNo">286</span> }<a name="line.286"></a>
+<span class="sourceLineNo">287</span><a name="line.287"></a>
+<span class="sourceLineNo">288</span> public CompletableFuture<List<String>> list(String path) {<a name="line.288"></a>
+<span class="sourceLineNo">289</span> if (closed.get()) {<a name="line.289"></a>
+<span class="sourceLineNo">290</span> return FutureUtils.failedFuture(new DoNotRetryIOException("Client already closed"));<a name="line.290"></a>
+<span class="sourceLineNo">291</span> }<a name="line.291"></a>
+<span class="sourceLineNo">292</span> CompletableFuture<List<String>> future = new CompletableFuture<>();<a name="line.292"></a>
+<span class="sourceLineNo">293</span> tasks.add(new ZKTask<List<String>>(path, future, "list") {<a name="line.293"></a>
+<span class="sourceLineNo">294</span><a name="line.294"></a>
+<span class="sourceLineNo">295</span> @Override<a name="line.295"></a>
+<span class="sourceLineNo">296</span> protected void doExec(ZooKeeper zk) {<a name="line.296"></a>
+<span class="sourceLineNo">297</span> zk.getChildren(path, false, (rc, path, ctx, children) -> onComplete(zk, rc, children, true),<a name="line.297"></a>
+<span class="sourceLineNo">298</span> null);<a name="line.298"></a>
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+<span class="sourceLineNo">300</span> });<a name="line.300"></a>
+<span class="sourceLineNo">301</span> return future;<a name="line.301"></a>
+<span class="sourceLineNo">302</span> }<a name="line.302"></a>
+<span class="sourceLineNo">303</span><a name="line.303"></a>
+<span class="sourceLineNo">304</span> private void closeZk() {<a name="line.304"></a>
+<span class="sourceLineNo">305</span> if (zookeeper != null) {<a name="line.305"></a>
+<span class="sourceLineNo">306</span> try {<a name="line.306"></a>
+<span class="sourceLineNo">307</span> zookeeper.close();<a name="line.307"></a>
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+<span class="sourceLineNo">310</span> zookeeper = null;<a name="line.310"></a>
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+<span class="sourceLineNo">312</span> }<a name="line.312"></a>
+<span class="sourceLineNo">313</span><a name="line.313"></a>
+<span class="sourceLineNo">314</span> private ZooKeeper getZk() throws IOException {<a name="line.314"></a>
+<span class="sourceLineNo">315</span> // may be closed when session expired<a name="line.315"></a>
+<span class="sourceLineNo">316</span> if (zookeeper == null || !zookeeper.getState().isAlive()) {<a name="line.316"></a>
+<span class="sourceLineNo">317</span> zookeeper = new ZooKeeper(connectString, sessionTimeoutMs, e -> {});<a name="line.317"></a>
+<span class="sourceLineNo">318</span> }<a name="line.318"></a>
+<span class="sourceLineNo">319</span> return zookeeper;<a name="line.319"></a>
+<span class="sourceLineNo">320</span> }<a name="line.320"></a>
+<span class="sourceLineNo">321</span><a name="line.321"></a>
+<span class="sourceLineNo">322</span> private void run() {<a name="line.322"></a>
+<span class="sourceLineNo">323</span> for (;;) {<a name="line.323"></a>
+<span class="sourceLineNo">324</span> Task task;<a name="line.324"></a>
+<span class="sourceLineNo">325</span> try {<a name="line.325"></a>
+<span class="sourceLineNo">326</span> task = tasks.poll(keepAliveTimeMs, TimeUnit.MILLISECONDS);<a name="line.326"></a>
+<span class="sourceLineNo">327</span> } catch (InterruptedException e) {<a name="line.327"></a>
+<span class="sourceLineNo">328</span> continue;<a name="line.328"></a>
+<span class="sourceLineNo">329</span> }<a name="line.329"></a>
+<span class="sourceLineNo">330</span> if (task == CLOSE) {<a name="line.330"></a>
+<span class="sourceLineNo">331</span> break;<a name="line.331"></a>
+<span class="sourceLineNo">332</span> }<a name="line.332"></a>
+<span class="sourceLineNo">333</span> if (task == null) {<a name="line.333"></a>
+<span class="sourceLineNo">334</span> if (pendingRequests == 0) {<a name="line.334"></a>
+<span class="sourceLineNo">335</span> LOG.trace("{} to {} inactive for {}ms; closing (Will reconnect when new requests)",<a name="line.335"></a>
+<span class="sourceLineNo">336</span> getId(), connectString, keepAliveTimeMs);<a name="line.336"></a>
+<span class="sourceLineNo">337</span> closeZk();<a name="line.337"></a>
+<span class="sourceLineNo">338</span> }<a name="line.338"></a>
+<span class="sourceLineNo">339</span> continue;<a name="line.339"></a>
+<span class="sourceLineNo">340</span> }<a name="line.340"></a>
+<span class="sourceLineNo">341</span> if (!task.needZk()) {<a name="line.341"></a>
+<span class="sourceLineNo">342</span> task.exec(null);<a name="line.342"></a>
+<span class="sourceLineNo">343</span> } else {<a name="line.343"></a>
+<span class="sourceLineNo">344</span> ZooKeeper zk;<a name="line.344"></a>
+<span class="sourceLineNo">345</span> try {<a name="line.345"></a>
+<span class="sourceLineNo">346</span> zk = getZk();<a name="line.346"></a>
+<span class="sourceLineNo">347</span> } catch (IOException e) {<a name="line.347"></a>
+<span class="sourceLineNo">348</span> task.connectFailed(e);<a name="line.348"></a>
+<span class="sourceLineNo">349</span> continue;<a name="line.349"></a>
+<span class="sourceLineNo">350</span> }<a name="line.350"></a>
+<span class="sourceLineNo">351</span> task.exec(zk);<a name="line.351"></a>
+<span class="sourceLineNo">352</span> }<a name="line.352"></a>
+<span class="sourceLineNo">353</span> }<a name="line.353"></a>
+<span class="sourceLineNo">354</span> closeZk();<a name="line.354"></a>
+<span class="sourceLineNo">355</span> DoNotRetryIOException error = new DoNotRetryIOException("Client already closed");<a name="line.355"></a>
+<span class="sourceLineNo">356</span> Arrays.stream(tasks.toArray(new Task[0])).forEach(t -> t.closed(error));<a name="line.356"></a>
+<span class="sourceLineNo">357</span> tasks.clear();<a name="line.357"></a>
+<span class="sourceLineNo">358</span> }<a name="line.358"></a>
+<span class="sourceLineNo">359</span><a name="line.359"></a>
+<span class="sourceLineNo">360</span> @Override<a name="line.360"></a>
+<span class="sourceLineNo">361</span> public void close() {<a name="line.361"></a>
+<span class="sourceLineNo">362</span> if (closed.compareAndSet(false, true)) {<a name="line.362"></a>
+<span class="sourceLineNo">363</span> LOG.debug("Close zookeeper connection {} to {}", getId(), connectString);<a name="line.363"></a>
+<span class="sourceLineNo">364</span> tasks.add(CLOSE);<a name="line.364"></a>
+<span class="sourceLineNo">365</span> }<a name="line.365"></a>
+<span class="sourceLineNo">366</span> }<a name="line.366"></a>
+<span class="sourceLineNo">367</span><a name="line.367"></a>
+<span class="sourceLineNo">368</span> @VisibleForTesting<a name="line.368"></a>
+<span class="sourceLineNo">369</span> public String getConnectString() {<a name="line.369"></a>
+<span class="sourceLineNo">370</span> return connectString;<a name="line.370"></a>
+<span class="sourceLineNo">371</span> }<a name="line.371"></a>
+<span class="sourceLineNo">372</span>}<a name="line.372"></a>
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.html b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.html
index 51a1259..d782768 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ReadOnlyZKClient.html
@@ -32,335 +32,352 @@
<span class="sourceLineNo">024</span>import java.io.IOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Arrays;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.util.EnumSet;<a name="line.26"></a>
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-<span class="sourceLineNo">028</span>import java.util.concurrent.DelayQueue;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.concurrent.Delayed;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import java.util.concurrent.TimeUnit;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import java.util.concurrent.atomic.AtomicBoolean;<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.DoNotRetryIOException;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.FutureUtils;<a name="line.34"></a>
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-<span class="sourceLineNo">038</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.zookeeper.ZooKeeper;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.zookeeper.data.Stat;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a>
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-<span class="sourceLineNo">046</span>/**<a name="line.46"></a>
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-<span class="sourceLineNo">132</span> this.connectString = clientZkQuorumServers;<a name="line.132"></a>
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-<span class="sourceLineNo">141</span> LOG.debug(<a name="line.141"></a>
-<span class="sourceLineNo">142</span> "Connect {} to {} with session timeout={}ms, retries {}, " +<a name="line.142"></a>
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-<span class="sourceLineNo">145</span> Threads.setDaemonThreadRunning(new Thread(this::run),<a name="line.145"></a>
-<span class="sourceLineNo">146</span> "ReadOnlyZKClient-" + connectString + "@" + getId());<a name="line.146"></a>
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index e43cc43..371e4c4 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/zookeeper/ZNodePaths.html
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<span class="sourceLineNo">170</span> * @return replicaId<a name="line.170"></a>
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<span class="sourceLineNo">172</span> public int getMetaReplicaIdFromZnode(String znode) {<a name="line.172"></a>
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<span class="sourceLineNo">179</span> /**<a name="line.179"></a>
<span class="sourceLineNo">180</span> * Is it the default meta replica's znode<a name="line.180"></a>
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+<span class="sourceLineNo">181</span> * @param znode the name of the znode, does not include baseZNode<a name="line.181"></a>
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<span class="sourceLineNo">184</span> public boolean isDefaultMetaReplicaZnode(String znode) {<a name="line.184"></a>
diff --git a/downloads.html b/downloads.html
index c7f8068..0674d6a 100644
--- a/downloads.html
+++ b/downloads.html
@@ -401,7 +401,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/export_control.html b/export_control.html
index 3ea18a7..59b6172 100644
--- a/export_control.html
+++ b/export_control.html
@@ -187,7 +187,7 @@ for more details.</p>
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/index.html b/index.html
index 1e411f8..5efdf47 100644
--- a/index.html
+++ b/index.html
@@ -269,7 +269,7 @@ Apache HBase is an open-source, distributed, versioned, non-relational database
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/issue-management.html b/issue-management.html
index da77799..2042917 100644
--- a/issue-management.html
+++ b/issue-management.html
@@ -159,7 +159,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/licenses.html b/licenses.html
index b5ab9c4..fa4368c 100644
--- a/licenses.html
+++ b/licenses.html
@@ -362,7 +362,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/mailing-lists.html b/mailing-lists.html
index 93bae03..f717596 100644
--- a/mailing-lists.html
+++ b/mailing-lists.html
@@ -212,7 +212,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/metrics.html b/metrics.html
index 5bf4ff5..e4f7d5e 100644
--- a/metrics.html
+++ b/metrics.html
@@ -315,7 +315,7 @@ export HBASE_REGIONSERVER_OPTS="$HBASE_JMX_OPTS -Dcom.sun.management.jmxrem
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/old_news.html b/old_news.html
index 109e389..c00f67f 100644
--- a/old_news.html
+++ b/old_news.html
@@ -296,7 +296,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/plugin-management.html b/plugin-management.html
index c74d7d5..d386737 100644
--- a/plugin-management.html
+++ b/plugin-management.html
@@ -311,7 +311,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/plugins.html b/plugins.html
index 8fae567..44ebf2b 100644
--- a/plugins.html
+++ b/plugins.html
@@ -238,7 +238,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/poweredbyhbase.html b/poweredbyhbase.html
index f7593ea..650d1ac 100644
--- a/poweredbyhbase.html
+++ b/poweredbyhbase.html
@@ -625,7 +625,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/project-info.html b/project-info.html
index 846f33c..725b8ab 100644
--- a/project-info.html
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@@ -203,7 +203,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/project-reports.html b/project-reports.html
index 4fb1e56..e44b989 100644
--- a/project-reports.html
+++ b/project-reports.html
@@ -176,7 +176,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/pseudo-distributed.html b/pseudo-distributed.html
index 4eaee65..5bbc802 100644
--- a/pseudo-distributed.html
+++ b/pseudo-distributed.html
@@ -164,7 +164,7 @@ Running Apache HBase (TM) in pseudo-distributed mode
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/replication.html b/replication.html
index 53ee0f9..0d72301 100644
--- a/replication.html
+++ b/replication.html
@@ -159,7 +159,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/resources.html b/resources.html
index 8a637e8..52c37b2 100644
--- a/resources.html
+++ b/resources.html
@@ -187,7 +187,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/scm.html b/scm.html
index d275646..c809e4a 100644
--- a/scm.html
+++ b/scm.html
@@ -170,7 +170,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/sponsors.html b/sponsors.html
index 3e794b1..a2a0cf0 100644
--- a/sponsors.html
+++ b/sponsors.html
@@ -189,7 +189,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/summary.html b/summary.html
index 5d94003..44647ca 100644
--- a/summary.html
+++ b/summary.html
@@ -202,7 +202,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/supportingprojects.html b/supportingprojects.html
index 89b1435..105f4f2 100644
--- a/supportingprojects.html
+++ b/supportingprojects.html
@@ -376,7 +376,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
diff --git a/team.html b/team.html
index 84c4965..ab8cf05 100644
--- a/team.html
+++ b/team.html
@@ -643,7 +643,7 @@
<div class="row">
<p>Copyright ©2007–2019
<a href="https://www.apache.org/">The Apache Software Foundation</a>.
-All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-10</li>
+All rights reserved. <li id="publishDate" class="pull-right">Last Published: 2019-05-11</li>
</p>
</div>
<p id="poweredBy" class="pull-right"><a href="http://maven.apache.org/" title="Built by Maven" class="poweredBy"><img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /></a>
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--- a/testdevapidocs/index-all.html
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@@ -54629,8 +54629,6 @@
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<dt><a href="org/apache/hadoop/hbase/rest/TestGetAndPutResource.html" title="class in org.apache.hadoop.hbase.rest"><span class="typeNameLink">TestGetAndPutResource</span></a> - Class in <a href="org/apache/hadoop/hbase/rest/package-summary.html">org.apache.hadoop.hbase.rest</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/rest/TestGetAndPutResource.html#TestGetAndPutResource--">TestGetAndPutResource()</a></span> - Constructor for class org.apache.hadoop.hbase.rest.<a href="org/apache/hadoop/hbase/rest/TestGetAndPutResource.html" title="class in org.apache.hadoop.hbase.rest">TestGetAndPutResource</a></dt>
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<dd> </dd>
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+<span class="sourceLineNo">066</span> // HBASE-21658.<a name="line.66"></a>
+<span class="sourceLineNo">067</span> conf.setInt(META_REPLICAS_NUM, 1);<a name="line.67"></a>
+<span class="sourceLineNo">068</span> REGISTRY = new ZKAsyncRegistry(conf);<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> @AfterClass<a name="line.71"></a>
+<span class="sourceLineNo">072</span> public static void tearDown() throws Exception {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> IOUtils.closeQuietly(REGISTRY);<a name="line.73"></a>
+<span class="sourceLineNo">074</span> TEST_UTIL.shutdownMiniCluster();<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> @Test<a name="line.77"></a>
+<span class="sourceLineNo">078</span> public void test() throws InterruptedException, ExecutionException, IOException {<a name="line.78"></a>
+<span class="sourceLineNo">079</span> LOG.info("STARTED TEST");<a name="line.79"></a>
+<span class="sourceLineNo">080</span> String clusterId = REGISTRY.getClusterId().get();<a name="line.80"></a>
+<span class="sourceLineNo">081</span> String expectedClusterId = TEST_UTIL.getHBaseCluster().getMaster().getClusterId();<a name="line.81"></a>
+<span class="sourceLineNo">082</span> assertEquals("Expected " + expectedClusterId + ", found=" + clusterId, expectedClusterId,<a name="line.82"></a>
+<span class="sourceLineNo">083</span> clusterId);<a name="line.83"></a>
+<span class="sourceLineNo">084</span> assertEquals(TEST_UTIL.getHBaseCluster().getClusterMetrics().getLiveServerMetrics().size(),<a name="line.84"></a>
+<span class="sourceLineNo">085</span> REGISTRY.getCurrentNrHRS().get().intValue());<a name="line.85"></a>
+<span class="sourceLineNo">086</span> assertEquals(TEST_UTIL.getHBaseCluster().getMaster().getServerName(),<a name="line.86"></a>
+<span class="sourceLineNo">087</span> REGISTRY.getMasterAddress().get());<a name="line.87"></a>
+<span class="sourceLineNo">088</span> assertEquals(-1, REGISTRY.getMasterInfoPort().get().intValue());<a name="line.88"></a>
+<span class="sourceLineNo">089</span> RegionReplicaTestHelper<a name="line.89"></a>
+<span class="sourceLineNo">090</span> .waitUntilAllMetaReplicasHavingRegionLocation(TEST_UTIL.getConfiguration(), REGISTRY, 3);<a name="line.90"></a>
+<span class="sourceLineNo">091</span> RegionLocations locs = REGISTRY.getMetaRegionLocation().get();<a name="line.91"></a>
+<span class="sourceLineNo">092</span> assertEquals(3, locs.getRegionLocations().length);<a name="line.92"></a>
+<span class="sourceLineNo">093</span> IntStream.range(0, 3).forEach(i -> {<a name="line.93"></a>
+<span class="sourceLineNo">094</span> HRegionLocation loc = locs.getRegionLocation(i);<a name="line.94"></a>
+<span class="sourceLineNo">095</span> assertNotNull("Replica " + i + " doesn't have location", loc);<a name="line.95"></a>
+<span class="sourceLineNo">096</span> assertEquals(TableName.META_TABLE_NAME, loc.getRegion().getTable());<a name="line.96"></a>
+<span class="sourceLineNo">097</span> assertEquals(i, loc.getRegion().getReplicaId());<a name="line.97"></a>
+<span class="sourceLineNo">098</span> });<a name="line.98"></a>
+<span class="sourceLineNo">099</span> }<a name="line.99"></a>
+<span class="sourceLineNo">100</span><a name="line.100"></a>
+<span class="sourceLineNo">101</span> @Test<a name="line.101"></a>
+<span class="sourceLineNo">102</span> public void testIndependentZKConnections() throws IOException {<a name="line.102"></a>
+<span class="sourceLineNo">103</span> try (ReadOnlyZKClient zk1 = REGISTRY.getZKClient()) {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> Configuration otherConf = new Configuration(TEST_UTIL.getConfiguration());<a name="line.104"></a>
+<span class="sourceLineNo">105</span> otherConf.set(HConstants.ZOOKEEPER_QUORUM, "127.0.0.1");<a name="line.105"></a>
+<span class="sourceLineNo">106</span> try (ZKAsyncRegistry otherRegistry = new ZKAsyncRegistry(otherConf)) {<a name="line.106"></a>
+<span class="sourceLineNo">107</span> ReadOnlyZKClient zk2 = otherRegistry.getZKClient();<a name="line.107"></a>
+<span class="sourceLineNo">108</span> assertNotSame("Using a different configuration / quorum should result in different " +<a name="line.108"></a>
+<span class="sourceLineNo">109</span> "backing zk connection.", zk1, zk2);<a name="line.109"></a>
+<span class="sourceLineNo">110</span> assertNotEquals(<a name="line.110"></a>
+<span class="sourceLineNo">111</span> "Using a different configrution / quorum should be reflected in the zk connection.",<a name="line.111"></a>
+<span class="sourceLineNo">112</span> zk1.getConnectString(), zk2.getConnectString());<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span> } finally {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> LOG.info("DONE!");<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>
diff --git a/testdevapidocs/src-html/org/apache/hadoop/hbase/zookeeper/TestReadOnlyZKClient.html b/testdevapidocs/src-html/org/apache/hadoop/hbase/zookeeper/TestReadOnlyZKClient.html
index c23ff97..cb22e7b 100644
--- a/testdevapidocs/src-html/org/apache/hadoop/hbase/zookeeper/TestReadOnlyZKClient.html
+++ b/testdevapidocs/src-html/org/apache/hadoop/hbase/zookeeper/TestReadOnlyZKClient.html
@@ -46,157 +46,174 @@
<span class="sourceLineNo">038</span>import static org.mockito.Mockito.when;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>import java.io.IOException;<a name="line.40"></a>
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-<span class="sourceLineNo">042</span>import java.util.concurrent.Exchanger;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import java.util.concurrent.ExecutionException;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.conf.Configuration;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.HBaseZKTestingUtility;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.HConstants;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.testclassification.ZKTests;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.zookeeper.AsyncCallback;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.zookeeper.CreateMode;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.zookeeper.KeeperException;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.zookeeper.ZooDefs;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.zookeeper.ZooKeeper;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.junit.AfterClass;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.junit.BeforeClass;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.junit.ClassRule;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.junit.Test;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.junit.experimental.categories.Category;<a name="line.62"></a>
-<span class="sourceLineNo">063</span><a name="line.63"></a>
-<span class="sourceLineNo">064</span>@Category({ ZKTests.class, MediumTests.class })<a name="line.64"></a>
-<span class="sourceLineNo">065</span>public class TestReadOnlyZKClient {<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span> @ClassRule<a name="line.67"></a>
-<span class="sourceLineNo">068</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.68"></a>
-<span class="sourceLineNo">069</span> HBaseClassTestRule.forClass(TestReadOnlyZKClient.class);<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span> private static HBaseZKTestingUtility UTIL = new HBaseZKTestingUtility();<a name="line.71"></a>
+<span class="sourceLineNo">041</span>import java.util.Collections;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import java.util.List;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import java.util.concurrent.CompletableFuture;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import java.util.concurrent.Exchanger;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import java.util.concurrent.ExecutionException;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.conf.Configuration;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.HBaseClassTestRule;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.HBaseZKTestingUtility;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.HConstants;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.Waiter.ExplainingPredicate;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.testclassification.MediumTests;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.testclassification.ZKTests;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.zookeeper.AsyncCallback;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.zookeeper.CreateMode;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.zookeeper.KeeperException;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.zookeeper.KeeperException.Code;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.zookeeper.ZooDefs;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.zookeeper.ZooKeeper;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.junit.AfterClass;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.junit.BeforeClass;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.junit.ClassRule;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.junit.Test;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.junit.experimental.categories.Category;<a name="line.64"></a>
+<span class="sourceLineNo">065</span><a name="line.65"></a>
+<span class="sourceLineNo">066</span>@Category({ ZKTests.class, MediumTests.class })<a name="line.66"></a>
+<span class="sourceLineNo">067</span>public class TestReadOnlyZKClient {<a name="line.67"></a>
+<span class="sourceLineNo">068</span><a name="line.68"></a>
+<span class="sourceLineNo">069</span> @ClassRule<a name="line.69"></a>
+<span class="sourceLineNo">070</span> public static final HBaseClassTestRule CLASS_RULE =<a name="line.70"></a>
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<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> private static int PORT;<a name="line.73"></a>
+<span class="sourceLineNo">073</span> private static HBaseZKTestingUtility UTIL = new HBaseZKTestingUtility();<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> private static String PATH = "/test";<a name="line.75"></a>
+<span class="sourceLineNo">075</span> private static int PORT;<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span> private static byte[] DATA;<a name="line.77"></a>
+<span class="sourceLineNo">077</span> private static String PATH = "/test";<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
-<span class="sourceLineNo">079</span> private static int CHILDREN = 5;<a name="line.79"></a>
+<span class="sourceLineNo">079</span> private static byte[] DATA;<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
-<span class="sourceLineNo">081</span> private static ReadOnlyZKClient RO_ZK;<a name="line.81"></a>
+<span class="sourceLineNo">081</span> private static int CHILDREN = 5;<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
-<span class="sourceLineNo">083</span> @BeforeClass<a name="line.83"></a>
-<span class="sourceLineNo">084</span> public static void setUp() throws Exception {<a name="line.84"></a>
-<span class="sourceLineNo">085</span> PORT = UTIL.startMiniZKCluster().getClientPort();<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> ZooKeeper zk = ZooKeeperHelper.getConnectedZooKeeper("localhost:" + PORT, 10000);<a name="line.87"></a>
-<span class="sourceLineNo">088</span> DATA = new byte[10];<a name="line.88"></a>
-<span class="sourceLineNo">089</span> ThreadLocalRandom.current().nextBytes(DATA);<a name="line.89"></a>
-<span class="sourceLineNo">090</span> zk.create(PATH, DATA, ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);<a name="line.90"></a>
-<span class="sourceLineNo">091</span> for (int i = 0; i < CHILDREN; i++) {<a name="line.91"></a>
-<span class="sourceLineNo">092</span> zk.create(PATH + "/c" + i, new byte[0], ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);<a name="line.92"></a>
-<span class="sourceLineNo">093</span> }<a name="line.93"></a>
-<span class="sourceLineNo">094</span> zk.close();<a name="line.94"></a>
-<span class="sourceLineNo">095</span> Configuration conf = UTIL.getConfiguration();<a name="line.95"></a>
-<span class="sourceLineNo">096</span> conf.set(HConstants.ZOOKEEPER_QUORUM, "localhost:" + PORT);<a name="line.96"></a>
-<span class="sourceLineNo">097</span> conf.setInt(ReadOnlyZKClient.RECOVERY_RETRY, 3);<a name="line.97"></a>
-<span class="sourceLineNo">098</span> conf.setInt(ReadOnlyZKClient.RECOVERY_RETRY_INTERVAL_MILLIS, 100);<a name="line.98"></a>
-<span class="sourceLineNo">099</span> conf.setInt(ReadOnlyZKClient.KEEPALIVE_MILLIS, 3000);<a name="line.99"></a>
-<span class="sourceLineNo">100</span> RO_ZK = new ReadOnlyZKClient(conf);<a name="line.100"></a>
-<span class="sourceLineNo">101</span> // only connect when necessary<a name="line.101"></a>
-<span class="sourceLineNo">102</span> assertNull(RO_ZK.zookeeper);<a name="line.102"></a>
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-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span> @AfterClass<a name="line.105"></a>
-<span class="sourceLineNo">106</span> public static void tearDown() throws IOException {<a name="line.106"></a>
-<span class="sourceLineNo">107</span> RO_ZK.close();<a name="line.107"></a>
-<span class="sourceLineNo">108</span> UTIL.shutdownMiniZKCluster();<a name="line.108"></a>
-<span class="sourceLineNo">109</span> UTIL.cleanupTestDir();<a name="line.109"></a>
-<span class="sourceLineNo">110</span> }<a name="line.110"></a>
-<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span> private void waitForIdleConnectionClosed() throws Exception {<a name="line.112"></a>
-<span class="sourceLineNo">113</span> // The zookeeper client should be closed finally after the keep alive time elapsed<a name="line.113"></a>
-<span class="sourceLineNo">114</span> UTIL.waitFor(10000, new ExplainingPredicate<Exception>() {<a name="line.114"></a>
-<span class="sourceLineNo">115</span><a name="line.115"></a>
-<span class="sourceLineNo">116</span> @Override<a name="line.116"></a>
-<span class="sourceLineNo">117</span> public boolean evaluate() throws Exception {<a name="line.117"></a>
-<span class="sourceLineNo">118</span> return RO_ZK.zookeeper == null;<a name="line.118"></a>
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-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> @Override<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public String explainFailure() throws Exception {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> return "Connection to zookeeper is still alive";<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> }<a name="line.126"></a>
-<span class="sourceLineNo">127</span><a name="line.127"></a>
-<span class="sourceLineNo">128</span> @Test<a name="line.128"></a>
-<span class="sourceLineNo">129</span> public void testGetAndExists() throws Exception {<a name="line.129"></a>
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-<span class="sourceLineNo">132</span> assertNotNull(RO_ZK.zookeeper);<a name="line.132"></a>
-<span class="sourceLineNo">133</span> waitForIdleConnectionClosed();<a name="line.133"></a>
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-<span class="sourceLineNo">139</span> try {<a name="line.139"></a>
-<span class="sourceLineNo">140</span> RO_ZK.get(pathNotExists).get();<a name="line.140"></a>
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-<span class="sourceLineNo">142</span> } catch (ExecutionException e) {<a name="line.142"></a>
-<span class="sourceLineNo">143</span> assertThat(e.getCause(), instanceOf(KeeperException.class));<a name="line.143"></a>
-<span class="sourceLineNo">144</span> KeeperException ke = (KeeperException) e.getCause();<a name="line.144"></a>
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-<span class="sourceLineNo">146</span> assertEquals(pathNotExists, ke.getPath());<a name="line.146"></a>
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-<span class="sourceLineNo">148</span> // exists will not throw exception.<a name="line.148"></a>
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-<span class="sourceLineNo">155</span> ZooKeeper zk = RO_ZK.zookeeper;<a name="line.155"></a>
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-<span class="sourceLineNo">158</span> // should not reach keep alive so still the same instance<a name="line.158"></a>
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-<span class="sourceLineNo">164</span> assertNotEquals(sessionId, RO_ZK.zookeeper.getSessionId());<a name="line.164"></a>
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-<span class="sourceLineNo">169</span> ZooKeeper mockedZK = mock(ZooKeeper.class);<a name="line.169"></a>
-<span class="sourceLineNo">170</span> Exchanger<AsyncCallback.DataCallback> exchanger = new Exchanger<>();<a name="line.170"></a>
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