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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
+<html lang="en">
+<head>
+<title>Source code</title>
+<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css"
title="Style">
+</head>
+<body>
+<div class="sourceContainer">
+<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
+<span class="sourceLineNo">002</span> * Licensed to the Apache Software
Foundation (ASF) under one<a name="line.2"></a>
+<span class="sourceLineNo">003</span> * or more contributor license
agreements. See the NOTICE file<a name="line.3"></a>
+<span class="sourceLineNo">004</span> * distributed with this work for
additional information<a name="line.4"></a>
+<span class="sourceLineNo">005</span> * regarding copyright ownership. The
ASF licenses this file<a name="line.5"></a>
+<span class="sourceLineNo">006</span> * to you under the Apache License,
Version 2.0 (the<a name="line.6"></a>
+<span class="sourceLineNo">007</span> * "License"); you may not use this file
except in compliance<a name="line.7"></a>
+<span class="sourceLineNo">008</span> * with the License. You may obtain a
copy of the License at<a name="line.8"></a>
+<span class="sourceLineNo">009</span> *<a name="line.9"></a>
+<span class="sourceLineNo">010</span> *
http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
+<span class="sourceLineNo">011</span> *<a name="line.11"></a>
+<span class="sourceLineNo">012</span> * Unless required by applicable law or
agreed to in writing, software<a name="line.12"></a>
+<span class="sourceLineNo">013</span> * distributed under the License is
distributed on an "AS IS" BASIS,<a name="line.13"></a>
+<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF
ANY KIND, either express or implied.<a name="line.14"></a>
+<span class="sourceLineNo">015</span> * See the License for the specific
language governing permissions and<a name="line.15"></a>
+<span class="sourceLineNo">016</span> * limitations under the License.<a
name="line.16"></a>
+<span class="sourceLineNo">017</span> */<a name="line.17"></a>
+<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.client;<a
name="line.18"></a>
+<span class="sourceLineNo">019</span><a name="line.19"></a>
+<span class="sourceLineNo">020</span>import static
java.util.stream.Collectors.toList;<a name="line.20"></a>
+<span class="sourceLineNo">021</span>import static
org.apache.hadoop.hbase.HConstants.EMPTY_END_ROW;<a name="line.21"></a>
+<span class="sourceLineNo">022</span>import static
org.apache.hadoop.hbase.HConstants.EMPTY_START_ROW;<a name="line.22"></a>
+<span class="sourceLineNo">023</span><a name="line.23"></a>
+<span class="sourceLineNo">024</span>import
org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a
name="line.24"></a>
+<span class="sourceLineNo">025</span>import
org.apache.hadoop.hbase.shaded.com.google.common.base.Preconditions;<a
name="line.25"></a>
+<span class="sourceLineNo">026</span><a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.io.IOException;<a
name="line.27"></a>
+<span class="sourceLineNo">028</span>import
java.lang.reflect.UndeclaredThrowableException;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.net.InetAddress;<a
name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.net.UnknownHostException;<a
name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.Arrays;<a
name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.List;<a
name="line.32"></a>
+<span class="sourceLineNo">033</span>import
java.util.concurrent.CompletableFuture;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import
java.util.concurrent.ExecutorService;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import
java.util.concurrent.ThreadLocalRandom;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import java.util.concurrent.TimeUnit;<a
name="line.36"></a>
+<span class="sourceLineNo">037</span><a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.commons.logging.Log;<a
name="line.38"></a>
+<span class="sourceLineNo">039</span>import
org.apache.commons.logging.LogFactory;<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.Cell;<a
name="line.41"></a>
+<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.CellComparatorImpl;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import
org.apache.hadoop.hbase.CellUtil;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import
org.apache.hadoop.hbase.HConstants;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import
org.apache.hadoop.hbase.HRegionInfo;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import
org.apache.hadoop.hbase.MasterNotRunningException;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import
org.apache.hadoop.hbase.ServerName;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import
org.apache.hadoop.hbase.TableName;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import
org.apache.yetus.audience.InterfaceAudience;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import
org.apache.hadoop.hbase.client.metrics.ScanMetrics;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import
org.apache.hadoop.hbase.ipc.HBaseRpcController;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import
org.apache.hadoop.hbase.security.User;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import
org.apache.hadoop.hbase.security.UserProvider;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import
org.apache.hadoop.hbase.shaded.com.google.protobuf.ServiceException;<a
name="line.54"></a>
+<span class="sourceLineNo">055</span>import
org.apache.hadoop.hbase.shaded.protobuf.ResponseConverter;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos.AdminService;<a
name="line.56"></a>
+<span class="sourceLineNo">057</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ClientService;<a
name="line.57"></a>
+<span class="sourceLineNo">058</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.ScanResponse;<a
name="line.58"></a>
+<span class="sourceLineNo">059</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.MasterService;<a
name="line.59"></a>
+<span class="sourceLineNo">060</span>import
org.apache.hadoop.hbase.util.Bytes;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import
org.apache.hadoop.hbase.util.ReflectionUtils;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import
org.apache.hadoop.ipc.RemoteException;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.net.DNS;<a
name="line.63"></a>
+<span class="sourceLineNo">064</span><a name="line.64"></a>
+<span class="sourceLineNo">065</span>/**<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * Utility used by client connections.<a
name="line.66"></a>
+<span class="sourceLineNo">067</span> */<a name="line.67"></a>
+<span class="sourceLineNo">068</span>@InterfaceAudience.Private<a
name="line.68"></a>
+<span class="sourceLineNo">069</span>public final class ConnectionUtils {<a
name="line.69"></a>
+<span class="sourceLineNo">070</span><a name="line.70"></a>
+<span class="sourceLineNo">071</span> private static final Log LOG =
LogFactory.getLog(ConnectionUtils.class);<a name="line.71"></a>
+<span class="sourceLineNo">072</span><a name="line.72"></a>
+<span class="sourceLineNo">073</span> private ConnectionUtils() {<a
name="line.73"></a>
+<span class="sourceLineNo">074</span> }<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> * Calculate pause time. Built on
{@link HConstants#RETRY_BACKOFF}.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * @param pause time to pause<a
name="line.78"></a>
+<span class="sourceLineNo">079</span> * @param tries amount of tries<a
name="line.79"></a>
+<span class="sourceLineNo">080</span> * @return How long to wait after
<code>tries</code> retries<a name="line.80"></a>
+<span class="sourceLineNo">081</span> */<a name="line.81"></a>
+<span class="sourceLineNo">082</span> public static long getPauseTime(final
long pause, final int tries) {<a name="line.82"></a>
+<span class="sourceLineNo">083</span> int ntries = tries;<a
name="line.83"></a>
+<span class="sourceLineNo">084</span> if (ntries >=
HConstants.RETRY_BACKOFF.length) {<a name="line.84"></a>
+<span class="sourceLineNo">085</span> ntries =
HConstants.RETRY_BACKOFF.length - 1;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> }<a name="line.86"></a>
+<span class="sourceLineNo">087</span> if (ntries < 0) {<a
name="line.87"></a>
+<span class="sourceLineNo">088</span> ntries = 0;<a name="line.88"></a>
+<span class="sourceLineNo">089</span> }<a name="line.89"></a>
+<span class="sourceLineNo">090</span><a name="line.90"></a>
+<span class="sourceLineNo">091</span> long normalPause = pause *
HConstants.RETRY_BACKOFF[ntries];<a name="line.91"></a>
+<span class="sourceLineNo">092</span> // 1% possible jitter<a
name="line.92"></a>
+<span class="sourceLineNo">093</span> long jitter = (long) (normalPause *
ThreadLocalRandom.current().nextFloat() * 0.01f);<a name="line.93"></a>
+<span class="sourceLineNo">094</span> return normalPause + jitter;<a
name="line.94"></a>
+<span class="sourceLineNo">095</span> }<a name="line.95"></a>
+<span class="sourceLineNo">096</span><a name="line.96"></a>
+<span class="sourceLineNo">097</span> /**<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * @param conn The connection for which
to replace the generator.<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * @param cnm Replaces the nonce
generator used, for testing.<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * @return old nonce generator.<a
name="line.100"></a>
+<span class="sourceLineNo">101</span> */<a name="line.101"></a>
+<span class="sourceLineNo">102</span> public static NonceGenerator
injectNonceGeneratorForTesting(ClusterConnection conn,<a name="line.102"></a>
+<span class="sourceLineNo">103</span> NonceGenerator cnm) {<a
name="line.103"></a>
+<span class="sourceLineNo">104</span> return
ConnectionImplementation.injectNonceGeneratorForTesting(conn, cnm);<a
name="line.104"></a>
+<span class="sourceLineNo">105</span> }<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
+<span class="sourceLineNo">107</span> /**<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * Changes the configuration to set the
number of retries needed when using Connection internally,<a
name="line.108"></a>
+<span class="sourceLineNo">109</span> * e.g. for updating catalog tables,
etc. Call this method before we create any Connections.<a name="line.109"></a>
+<span class="sourceLineNo">110</span> * @param c The Configuration instance
to set the retries into.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> * @param log Used to log what we set
in here.<a name="line.111"></a>
+<span class="sourceLineNo">112</span> */<a name="line.112"></a>
+<span class="sourceLineNo">113</span> public static void
setServerSideHConnectionRetriesConfig(final Configuration c, final String sn,<a
name="line.113"></a>
+<span class="sourceLineNo">114</span> final Log log) {<a
name="line.114"></a>
+<span class="sourceLineNo">115</span> // TODO: Fix this. Not all
connections from server side should have 10 times the retries.<a
name="line.115"></a>
+<span class="sourceLineNo">116</span> int hcRetries =
c.getInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER,<a name="line.116"></a>
+<span class="sourceLineNo">117</span>
HConstants.DEFAULT_HBASE_CLIENT_RETRIES_NUMBER);<a name="line.117"></a>
+<span class="sourceLineNo">118</span> // Go big. Multiply by 10. If we
can't get to meta after this many retries<a name="line.118"></a>
+<span class="sourceLineNo">119</span> // then something seriously wrong.<a
name="line.119"></a>
+<span class="sourceLineNo">120</span> int serversideMultiplier =
c.getInt("hbase.client.serverside.retries.multiplier", 10);<a
name="line.120"></a>
+<span class="sourceLineNo">121</span> int retries = hcRetries *
serversideMultiplier;<a name="line.121"></a>
+<span class="sourceLineNo">122</span>
c.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, retries);<a
name="line.122"></a>
+<span class="sourceLineNo">123</span> log.info(sn + " server-side
Connection retries=" + retries);<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 ClusterConnection that will
short-circuit RPC making direct invocations against the<a name="line.127"></a>
+<span class="sourceLineNo">128</span> * localhost if the invocation target
is 'this' server; save on network and protobuf<a name="line.128"></a>
+<span class="sourceLineNo">129</span> * invocations.<a name="line.129"></a>
+<span class="sourceLineNo">130</span> */<a name="line.130"></a>
+<span class="sourceLineNo">131</span> @VisibleForTesting // Class is visible
so can assert we are short-circuiting when expected.<a name="line.131"></a>
+<span class="sourceLineNo">132</span> public static class
ShortCircuitingClusterConnection extends ConnectionImplementation {<a
name="line.132"></a>
+<span class="sourceLineNo">133</span> private final ServerName
serverName;<a name="line.133"></a>
+<span class="sourceLineNo">134</span> private final
AdminService.BlockingInterface localHostAdmin;<a name="line.134"></a>
+<span class="sourceLineNo">135</span> private final
ClientService.BlockingInterface localHostClient;<a name="line.135"></a>
+<span class="sourceLineNo">136</span><a name="line.136"></a>
+<span class="sourceLineNo">137</span> private
ShortCircuitingClusterConnection(Configuration conf, ExecutorService pool, User
user,<a name="line.137"></a>
+<span class="sourceLineNo">138</span> ServerName serverName,
AdminService.BlockingInterface admin,<a name="line.138"></a>
+<span class="sourceLineNo">139</span> ClientService.BlockingInterface
client)<a name="line.139"></a>
+<span class="sourceLineNo">140</span> throws IOException {<a
name="line.140"></a>
+<span class="sourceLineNo">141</span> super(conf, pool, user);<a
name="line.141"></a>
+<span class="sourceLineNo">142</span> this.serverName = serverName;<a
name="line.142"></a>
+<span class="sourceLineNo">143</span> this.localHostAdmin = admin;<a
name="line.143"></a>
+<span class="sourceLineNo">144</span> this.localHostClient = client;<a
name="line.144"></a>
+<span class="sourceLineNo">145</span> }<a name="line.145"></a>
+<span class="sourceLineNo">146</span><a name="line.146"></a>
+<span class="sourceLineNo">147</span> @Override<a name="line.147"></a>
+<span class="sourceLineNo">148</span> public AdminService.BlockingInterface
getAdmin(ServerName sn) throws IOException {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> return serverName.equals(sn) ?
this.localHostAdmin : super.getAdmin(sn);<a name="line.149"></a>
+<span class="sourceLineNo">150</span> }<a name="line.150"></a>
+<span class="sourceLineNo">151</span><a name="line.151"></a>
+<span class="sourceLineNo">152</span> @Override<a name="line.152"></a>
+<span class="sourceLineNo">153</span> public
ClientService.BlockingInterface getClient(ServerName sn) throws IOException {<a
name="line.153"></a>
+<span class="sourceLineNo">154</span> return serverName.equals(sn) ?
this.localHostClient : super.getClient(sn);<a name="line.154"></a>
+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span><a name="line.156"></a>
+<span class="sourceLineNo">157</span> @Override<a name="line.157"></a>
+<span class="sourceLineNo">158</span> public MasterKeepAliveConnection
getKeepAliveMasterService() throws MasterNotRunningException {<a
name="line.158"></a>
+<span class="sourceLineNo">159</span> if (this.localHostClient instanceof
MasterService.BlockingInterface) {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> return new
ShortCircuitMasterConnection((MasterService.BlockingInterface)this.localHostClient);<a
name="line.160"></a>
+<span class="sourceLineNo">161</span> }<a name="line.161"></a>
+<span class="sourceLineNo">162</span> return
super.getKeepAliveMasterService();<a name="line.162"></a>
+<span class="sourceLineNo">163</span> }<a name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span><a name="line.165"></a>
+<span class="sourceLineNo">166</span> /**<a name="line.166"></a>
+<span class="sourceLineNo">167</span> * Creates a short-circuit connection
that can bypass the RPC layer (serialization,<a name="line.167"></a>
+<span class="sourceLineNo">168</span> * deserialization, networking, etc..)
when talking to a local server.<a name="line.168"></a>
+<span class="sourceLineNo">169</span> * @param conf the current
configuration<a name="line.169"></a>
+<span class="sourceLineNo">170</span> * @param pool the thread pool to use
for batch operations<a name="line.170"></a>
+<span class="sourceLineNo">171</span> * @param user the user the connection
is for<a name="line.171"></a>
+<span class="sourceLineNo">172</span> * @param serverName the local server
name<a name="line.172"></a>
+<span class="sourceLineNo">173</span> * @param admin the admin interface of
the local server<a name="line.173"></a>
+<span class="sourceLineNo">174</span> * @param client the client interface
of the local server<a name="line.174"></a>
+<span class="sourceLineNo">175</span> * @return an short-circuit
connection.<a name="line.175"></a>
+<span class="sourceLineNo">176</span> * @throws IOException if IO failure
occurred<a name="line.176"></a>
+<span class="sourceLineNo">177</span> */<a name="line.177"></a>
+<span class="sourceLineNo">178</span> public static ClusterConnection
createShortCircuitConnection(final Configuration conf,<a name="line.178"></a>
+<span class="sourceLineNo">179</span> ExecutorService pool, User user,
final ServerName serverName,<a name="line.179"></a>
+<span class="sourceLineNo">180</span> final
AdminService.BlockingInterface admin, final ClientService.BlockingInterface
client)<a name="line.180"></a>
+<span class="sourceLineNo">181</span> throws IOException {<a
name="line.181"></a>
+<span class="sourceLineNo">182</span> if (user == null) {<a
name="line.182"></a>
+<span class="sourceLineNo">183</span> user =
UserProvider.instantiate(conf).getCurrent();<a name="line.183"></a>
+<span class="sourceLineNo">184</span> }<a name="line.184"></a>
+<span class="sourceLineNo">185</span> return new
ShortCircuitingClusterConnection(conf, pool, user, serverName, admin,
client);<a name="line.185"></a>
+<span class="sourceLineNo">186</span> }<a name="line.186"></a>
+<span class="sourceLineNo">187</span><a name="line.187"></a>
+<span class="sourceLineNo">188</span> /**<a name="line.188"></a>
+<span class="sourceLineNo">189</span> * Setup the connection class, so that
it will not depend on master being online. Used for testing<a
name="line.189"></a>
+<span class="sourceLineNo">190</span> * @param conf configuration to set<a
name="line.190"></a>
+<span class="sourceLineNo">191</span> */<a name="line.191"></a>
+<span class="sourceLineNo">192</span> @VisibleForTesting<a
name="line.192"></a>
+<span class="sourceLineNo">193</span> public static void
setupMasterlessConnection(Configuration conf) {<a name="line.193"></a>
+<span class="sourceLineNo">194</span>
conf.set(ClusterConnection.HBASE_CLIENT_CONNECTION_IMPL,
MasterlessConnection.class.getName());<a name="line.194"></a>
+<span class="sourceLineNo">195</span> }<a name="line.195"></a>
+<span class="sourceLineNo">196</span><a name="line.196"></a>
+<span class="sourceLineNo">197</span> /**<a name="line.197"></a>
+<span class="sourceLineNo">198</span> * Some tests shut down the master. But
table availability is a master RPC which is performed on<a name="line.198"></a>
+<span class="sourceLineNo">199</span> * region re-lookups.<a
name="line.199"></a>
+<span class="sourceLineNo">200</span> */<a name="line.200"></a>
+<span class="sourceLineNo">201</span> static class MasterlessConnection
extends ConnectionImplementation {<a name="line.201"></a>
+<span class="sourceLineNo">202</span> MasterlessConnection(Configuration
conf, ExecutorService pool, User user) throws IOException {<a
name="line.202"></a>
+<span class="sourceLineNo">203</span> super(conf, pool, user);<a
name="line.203"></a>
+<span class="sourceLineNo">204</span> }<a name="line.204"></a>
+<span class="sourceLineNo">205</span><a name="line.205"></a>
+<span class="sourceLineNo">206</span> @Override<a name="line.206"></a>
+<span class="sourceLineNo">207</span> public boolean
isTableDisabled(TableName tableName) throws IOException {<a name="line.207"></a>
+<span class="sourceLineNo">208</span> // treat all tables as enabled<a
name="line.208"></a>
+<span class="sourceLineNo">209</span> return false;<a name="line.209"></a>
+<span class="sourceLineNo">210</span> }<a name="line.210"></a>
+<span class="sourceLineNo">211</span> }<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> * Return retires + 1. The returned
value will be in range [1, Integer.MAX_VALUE].<a name="line.214"></a>
+<span class="sourceLineNo">215</span> */<a name="line.215"></a>
+<span class="sourceLineNo">216</span> static int retries2Attempts(int
retries) {<a name="line.216"></a>
+<span class="sourceLineNo">217</span> return Math.max(1, retries ==
Integer.MAX_VALUE ? Integer.MAX_VALUE : retries + 1);<a name="line.217"></a>
+<span class="sourceLineNo">218</span> }<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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the given server.<a name="line.221"></a>
+<span class="sourceLineNo">222</span> */<a name="line.222"></a>
+<span class="sourceLineNo">223</span> static String getStubKey(String
serviceName, ServerName serverName, boolean hostnameCanChange) {<a
name="line.223"></a>
+<span class="sourceLineNo">224</span> // Sometimes, servers go down and
they come back up with the same hostname but a different<a name="line.224"></a>
+<span class="sourceLineNo">225</span> // IP address. Force a resolution of
the rsHostname by trying to instantiate an<a name="line.225"></a>
+<span class="sourceLineNo">226</span> // InetSocketAddress, and this way we
will rightfully get a new stubKey.<a name="line.226"></a>
+<span class="sourceLineNo">227</span> // Also, include the hostname in the
key so as to take care of those cases where the<a name="line.227"></a>
+<span class="sourceLineNo">228</span> // DNS name is different but IP
address remains the same.<a name="line.228"></a>
+<span class="sourceLineNo">229</span> String hostname =
serverName.getHostname();<a name="line.229"></a>
+<span class="sourceLineNo">230</span> int port = serverName.getPort();<a
name="line.230"></a>
+<span class="sourceLineNo">231</span> if (hostnameCanChange) {<a
name="line.231"></a>
+<span class="sourceLineNo">232</span> try {<a name="line.232"></a>
+<span class="sourceLineNo">233</span> InetAddress ip =
InetAddress.getByName(hostname);<a name="line.233"></a>
+<span class="sourceLineNo">234</span> return serviceName + "@" +
hostname + "-" + ip.getHostAddress() + ":" + port;<a name="line.234"></a>
+<span class="sourceLineNo">235</span> } catch (UnknownHostException e)
{<a name="line.235"></a>
+<span class="sourceLineNo">236</span> LOG.warn("Can not resolve " +
hostname + ", please check your network", e);<a name="line.236"></a>
+<span class="sourceLineNo">237</span> }<a name="line.237"></a>
+<span class="sourceLineNo">238</span> }<a name="line.238"></a>
+<span class="sourceLineNo">239</span> return serviceName + "@" + hostname +
":" + port;<a name="line.239"></a>
+<span class="sourceLineNo">240</span> }<a name="line.240"></a>
+<span class="sourceLineNo">241</span><a name="line.241"></a>
+<span class="sourceLineNo">242</span> static void checkHasFamilies(Mutation
mutation) {<a name="line.242"></a>
+<span class="sourceLineNo">243</span>
Preconditions.checkArgument(mutation.numFamilies() > 0,<a
name="line.243"></a>
+<span class="sourceLineNo">244</span> "Invalid arguments to %s, zero
columns specified", mutation.toString());<a name="line.244"></a>
+<span class="sourceLineNo">245</span> }<a name="line.245"></a>
+<span class="sourceLineNo">246</span><a name="line.246"></a>
+<span class="sourceLineNo">247</span> /** Dummy nonce generator for disabled
nonces. */<a name="line.247"></a>
+<span class="sourceLineNo">248</span> static final NonceGenerator
NO_NONCE_GENERATOR = new NonceGenerator() {<a name="line.248"></a>
+<span class="sourceLineNo">249</span><a name="line.249"></a>
+<span class="sourceLineNo">250</span> @Override<a name="line.250"></a>
+<span class="sourceLineNo">251</span> public long newNonce() {<a
name="line.251"></a>
+<span class="sourceLineNo">252</span> return HConstants.NO_NONCE;<a
name="line.252"></a>
+<span class="sourceLineNo">253</span> }<a name="line.253"></a>
+<span class="sourceLineNo">254</span><a name="line.254"></a>
+<span class="sourceLineNo">255</span> @Override<a name="line.255"></a>
+<span class="sourceLineNo">256</span> public long getNonceGroup() {<a
name="line.256"></a>
+<span class="sourceLineNo">257</span> return HConstants.NO_NONCE;<a
name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span> };<a name="line.259"></a>
+<span class="sourceLineNo">260</span><a name="line.260"></a>
+<span class="sourceLineNo">261</span> // A byte array in which all elements
are the max byte, and it is used to<a name="line.261"></a>
+<span class="sourceLineNo">262</span> // construct closest front row<a
name="line.262"></a>
+<span class="sourceLineNo">263</span> static final byte[] MAX_BYTE_ARRAY =
Bytes.createMaxByteArray(9);<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>
+<span class="sourceLineNo">266</span> * Create the closest row after the
specified row<a name="line.266"></a>
+<span class="sourceLineNo">267</span> */<a name="line.267"></a>
+<span class="sourceLineNo">268</span> static byte[]
createClosestRowAfter(byte[] row) {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> return Arrays.copyOf(row, row.length
+ 1);<a name="line.269"></a>
+<span class="sourceLineNo">270</span> }<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> * Create a row before the specified
row and very close to the specified row.<a name="line.273"></a>
+<span class="sourceLineNo">274</span> */<a name="line.274"></a>
+<span class="sourceLineNo">275</span> static byte[]
createCloseRowBefore(byte[] row) {<a name="line.275"></a>
+<span class="sourceLineNo">276</span> if (row.length == 0) {<a
name="line.276"></a>
+<span class="sourceLineNo">277</span> return MAX_BYTE_ARRAY;<a
name="line.277"></a>
+<span class="sourceLineNo">278</span> }<a name="line.278"></a>
+<span class="sourceLineNo">279</span> if (row[row.length - 1] == 0) {<a
name="line.279"></a>
+<span class="sourceLineNo">280</span> return Arrays.copyOf(row,
row.length - 1);<a name="line.280"></a>
+<span class="sourceLineNo">281</span> } else {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> byte[] nextRow = new
byte[row.length + MAX_BYTE_ARRAY.length];<a name="line.282"></a>
+<span class="sourceLineNo">283</span> System.arraycopy(row, 0, nextRow,
0, row.length - 1);<a name="line.283"></a>
+<span class="sourceLineNo">284</span> nextRow[row.length - 1] = (byte)
((row[row.length - 1] & 0xFF) - 1);<a name="line.284"></a>
+<span class="sourceLineNo">285</span> System.arraycopy(MAX_BYTE_ARRAY, 0,
nextRow, row.length, MAX_BYTE_ARRAY.length);<a name="line.285"></a>
+<span class="sourceLineNo">286</span> return nextRow;<a
name="line.286"></a>
+<span class="sourceLineNo">287</span> }<a name="line.287"></a>
+<span class="sourceLineNo">288</span> }<a name="line.288"></a>
+<span class="sourceLineNo">289</span><a name="line.289"></a>
+<span class="sourceLineNo">290</span> static boolean isEmptyStartRow(byte[]
row) {<a name="line.290"></a>
+<span class="sourceLineNo">291</span> return Bytes.equals(row,
EMPTY_START_ROW);<a name="line.291"></a>
+<span class="sourceLineNo">292</span> }<a name="line.292"></a>
+<span class="sourceLineNo">293</span><a name="line.293"></a>
+<span class="sourceLineNo">294</span> static boolean isEmptyStopRow(byte[]
row) {<a name="line.294"></a>
+<span class="sourceLineNo">295</span> return Bytes.equals(row,
EMPTY_END_ROW);<a name="line.295"></a>
+<span class="sourceLineNo">296</span> }<a name="line.296"></a>
+<span class="sourceLineNo">297</span><a name="line.297"></a>
+<span class="sourceLineNo">298</span> static void
resetController(HBaseRpcController controller, long timeoutNs) {<a
name="line.298"></a>
+<span class="sourceLineNo">299</span> controller.reset();<a
name="line.299"></a>
+<span class="sourceLineNo">300</span> if (timeoutNs >= 0) {<a
name="line.300"></a>
+<span class="sourceLineNo">301</span> controller.setCallTimeout(<a
name="line.301"></a>
+<span class="sourceLineNo">302</span> (int) Math.min(Integer.MAX_VALUE,
TimeUnit.NANOSECONDS.toMillis(timeoutNs)));<a name="line.302"></a>
+<span class="sourceLineNo">303</span> }<a name="line.303"></a>
+<span class="sourceLineNo">304</span> }<a name="line.304"></a>
+<span class="sourceLineNo">305</span><a name="line.305"></a>
+<span class="sourceLineNo">306</span> static Throwable
translateException(Throwable t) {<a name="line.306"></a>
+<span class="sourceLineNo">307</span> if (t instanceof
UndeclaredThrowableException && t.getCause() != null) {<a
name="line.307"></a>
+<span class="sourceLineNo">308</span> t = t.getCause();<a
name="line.308"></a>
+<span class="sourceLineNo">309</span> }<a name="line.309"></a>
+<span class="sourceLineNo">310</span> if (t instanceof RemoteException) {<a
name="line.310"></a>
+<span class="sourceLineNo">311</span> t = ((RemoteException)
t).unwrapRemoteException();<a name="line.311"></a>
+<span class="sourceLineNo">312</span> }<a name="line.312"></a>
+<span class="sourceLineNo">313</span> if (t instanceof ServiceException
&& t.getCause() != null) {<a name="line.313"></a>
+<span class="sourceLineNo">314</span> t =
translateException(t.getCause());<a name="line.314"></a>
+<span class="sourceLineNo">315</span> }<a name="line.315"></a>
+<span class="sourceLineNo">316</span> return t;<a name="line.316"></a>
+<span class="sourceLineNo">317</span> }<a name="line.317"></a>
+<span class="sourceLineNo">318</span><a name="line.318"></a>
+<span class="sourceLineNo">319</span> static long calcEstimatedSize(Result
rs) {<a name="line.319"></a>
+<span class="sourceLineNo">320</span> long estimatedHeapSizeOfResult = 0;<a
name="line.320"></a>
+<span class="sourceLineNo">321</span> // We don't make Iterator here<a
name="line.321"></a>
+<span class="sourceLineNo">322</span> for (Cell cell : rs.rawCells()) {<a
name="line.322"></a>
+<span class="sourceLineNo">323</span> estimatedHeapSizeOfResult +=
CellUtil.estimatedHeapSizeOf(cell);<a name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span> return estimatedHeapSizeOfResult;<a
name="line.325"></a>
+<span class="sourceLineNo">326</span> }<a name="line.326"></a>
+<span class="sourceLineNo">327</span><a name="line.327"></a>
+<span class="sourceLineNo">328</span> static Result filterCells(Result
result, Cell keepCellsAfter) {<a name="line.328"></a>
+<span class="sourceLineNo">329</span> if (keepCellsAfter == null) {<a
name="line.329"></a>
+<span class="sourceLineNo">330</span> // do not need to filter<a
name="line.330"></a>
+<span class="sourceLineNo">331</span> return result;<a
name="line.331"></a>
+<span class="sourceLineNo">332</span> }<a name="line.332"></a>
+<span class="sourceLineNo">333</span> // not the same row<a
name="line.333"></a>
+<span class="sourceLineNo">334</span> if
(!CellUtil.matchingRow(keepCellsAfter, result.getRow(), 0,
result.getRow().length)) {<a name="line.334"></a>
+<span class="sourceLineNo">335</span> return result;<a
name="line.335"></a>
+<span class="sourceLineNo">336</span> }<a name="line.336"></a>
+<span class="sourceLineNo">337</span> Cell[] rawCells =
result.rawCells();<a name="line.337"></a>
+<span class="sourceLineNo">338</span> int index =<a name="line.338"></a>
+<span class="sourceLineNo">339</span> Arrays.binarySearch(rawCells,
keepCellsAfter, CellComparatorImpl.COMPARATOR::compareWithoutRow);<a
name="line.339"></a>
+<span class="sourceLineNo">340</span> if (index < 0) {<a
name="line.340"></a>
+<span class="sourceLineNo">341</span> index = -index - 1;<a
name="line.341"></a>
+<span class="sourceLineNo">342</span> } else {<a name="line.342"></a>
+<span class="sourceLineNo">343</span> index++;<a name="line.343"></a>
+<span class="sourceLineNo">344</span> }<a name="line.344"></a>
+<span class="sourceLineNo">345</span> if (index == 0) {<a
name="line.345"></a>
+<span class="sourceLineNo">346</span> return result;<a
name="line.346"></a>
+<span class="sourceLineNo">347</span> }<a name="line.347"></a>
+<span class="sourceLineNo">348</span> if (index == rawCells.length) {<a
name="line.348"></a>
+<span class="sourceLineNo">349</span> return null;<a name="line.349"></a>
+<span class="sourceLineNo">350</span> }<a name="line.350"></a>
+<span class="sourceLineNo">351</span> return
Result.create(Arrays.copyOfRange(rawCells, index, rawCells.length), null,<a
name="line.351"></a>
+<span class="sourceLineNo">352</span> result.isStale(),
result.mayHaveMoreCellsInRow());<a name="line.352"></a>
+<span class="sourceLineNo">353</span> }<a name="line.353"></a>
+<span class="sourceLineNo">354</span><a name="line.354"></a>
+<span class="sourceLineNo">355</span> // Add a delta to avoid timeout
immediately after a retry sleeping.<a name="line.355"></a>
+<span class="sourceLineNo">356</span> static final long SLEEP_DELTA_NS =
TimeUnit.MILLISECONDS.toNanos(1);<a name="line.356"></a>
+<span class="sourceLineNo">357</span><a name="line.357"></a>
+<span class="sourceLineNo">358</span> static Get toCheckExistenceOnly(Get
get) {<a name="line.358"></a>
+<span class="sourceLineNo">359</span> if (get.isCheckExistenceOnly()) {<a
name="line.359"></a>
+<span class="sourceLineNo">360</span> return get;<a name="line.360"></a>
+<span class="sourceLineNo">361</span> }<a name="line.361"></a>
+<span class="sourceLineNo">362</span> return
ReflectionUtils.newInstance(get.getClass(), get).setCheckExistenceOnly(true);<a
name="line.362"></a>
+<span class="sourceLineNo">363</span> }<a name="line.363"></a>
+<span class="sourceLineNo">364</span><a name="line.364"></a>
+<span class="sourceLineNo">365</span> static List<Get>
toCheckExistenceOnly(List<Get> gets) {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> return
gets.stream().map(ConnectionUtils::toCheckExistenceOnly).collect(toList());<a
name="line.366"></a>
+<span class="sourceLineNo">367</span> }<a name="line.367"></a>
+<span class="sourceLineNo">368</span><a name="line.368"></a>
+<span class="sourceLineNo">369</span> static RegionLocateType
getLocateType(Scan scan) {<a name="line.369"></a>
+<span class="sourceLineNo">370</span> if (scan.isReversed()) {<a
name="line.370"></a>
+<span class="sourceLineNo">371</span> if
(isEmptyStartRow(scan.getStartRow())) {<a name="line.371"></a>
+<span class="sourceLineNo">372</span> return RegionLocateType.BEFORE;<a
name="line.372"></a>
+<span class="sourceLineNo">373</span> } else {<a name="line.373"></a>
+<span class="sourceLineNo">374</span> return scan.includeStartRow() ?
RegionLocateType.CURRENT : RegionLocateType.BEFORE;<a name="line.374"></a>
+<span class="sourceLineNo">375</span> }<a name="line.375"></a>
+<span class="sourceLineNo">376</span> } else {<a name="line.376"></a>
+<span class="sourceLineNo">377</span> return scan.includeStartRow() ?
RegionLocateType.CURRENT : RegionLocateType.AFTER;<a name="line.377"></a>
+<span class="sourceLineNo">378</span> }<a name="line.378"></a>
+<span class="sourceLineNo">379</span> }<a name="line.379"></a>
+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span> static boolean
noMoreResultsForScan(Scan scan, HRegionInfo info) {<a name="line.381"></a>
+<span class="sourceLineNo">382</span> if (isEmptyStopRow(info.getEndKey()))
{<a name="line.382"></a>
+<span class="sourceLineNo">383</span> return true;<a name="line.383"></a>
+<span class="sourceLineNo">384</span> }<a name="line.384"></a>
+<span class="sourceLineNo">385</span> if
(isEmptyStopRow(scan.getStopRow())) {<a name="line.385"></a>
+<span class="sourceLineNo">386</span> return false;<a name="line.386"></a>
+<span class="sourceLineNo">387</span> }<a name="line.387"></a>
+<span class="sourceLineNo">388</span> int c =
Bytes.compareTo(info.getEndKey(), scan.getStopRow());<a name="line.388"></a>
+<span class="sourceLineNo">389</span> // 1. if our stop row is less than
the endKey of the region<a name="line.389"></a>
+<span class="sourceLineNo">390</span> // 2. if our stop row is equal to the
endKey of the region and we do not include the stop row<a name="line.390"></a>
+<span class="sourceLineNo">391</span> // for scan.<a name="line.391"></a>
+<span class="sourceLineNo">392</span> return c > 0 || (c == 0 &&
!scan.includeStopRow());<a name="line.392"></a>
+<span class="sourceLineNo">393</span> }<a name="line.393"></a>
+<span class="sourceLineNo">394</span><a name="line.394"></a>
+<span class="sourceLineNo">395</span> static boolean
noMoreResultsForReverseScan(Scan scan, HRegionInfo info) {<a
name="line.395"></a>
+<span class="sourceLineNo">396</span> if
(isEmptyStartRow(info.getStartKey())) {<a name="line.396"></a>
+<span class="sourceLineNo">397</span> return true;<a name="line.397"></a>
+<span class="sourceLineNo">398</span> }<a name="line.398"></a>
+<span class="sourceLineNo">399</span> if
(isEmptyStopRow(scan.getStopRow())) {<a name="line.399"></a>
+<span class="sourceLineNo">400</span> return false;<a name="line.400"></a>
+<span class="sourceLineNo">401</span> }<a name="line.401"></a>
+<span class="sourceLineNo">402</span> // no need to test the inclusive of
the stop row as the start key of a region is included in<a name="line.402"></a>
+<span class="sourceLineNo">403</span> // the region.<a name="line.403"></a>
+<span class="sourceLineNo">404</span> return
Bytes.compareTo(info.getStartKey(), scan.getStopRow()) <= 0;<a
name="line.404"></a>
+<span class="sourceLineNo">405</span> }<a name="line.405"></a>
+<span class="sourceLineNo">406</span><a name="line.406"></a>
+<span class="sourceLineNo">407</span> static <T>
CompletableFuture<List<T>>
allOf(List<CompletableFuture<T>> futures) {<a name="line.407"></a>
+<span class="sourceLineNo">408</span> return
CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]))<a
name="line.408"></a>
+<span class="sourceLineNo">409</span> .thenApply(v ->
futures.stream().map(f -> f.getNow(null)).collect(toList()));<a
name="line.409"></a>
+<span class="sourceLineNo">410</span> }<a name="line.410"></a>
+<span class="sourceLineNo">411</span><a name="line.411"></a>
+<span class="sourceLineNo">412</span> public static ScanResultCache
createScanResultCache(Scan scan) {<a name="line.412"></a>
+<span class="sourceLineNo">413</span> if (scan.getAllowPartialResults())
{<a name="line.413"></a>
+<span class="sourceLineNo">414</span> return new
AllowPartialScanResultCache();<a name="line.414"></a>
+<span class="sourceLineNo">415</span> } else if (scan.getBatch() > 0)
{<a name="line.415"></a>
+<span class="sourceLineNo">416</span> return new
BatchScanResultCache(scan.getBatch());<a name="line.416"></a>
+<span class="sourceLineNo">417</span> } else {<a name="line.417"></a>
+<span class="sourceLineNo">418</span> return new
CompleteScanResultCache();<a name="line.418"></a>
+<span class="sourceLineNo">419</span> }<a name="line.419"></a>
+<span class="sourceLineNo">420</span> }<a name="line.420"></a>
+<span class="sourceLineNo">421</span><a name="line.421"></a>
+<span class="sourceLineNo">422</span> private static final String MY_ADDRESS
= getMyAddress();<a name="line.422"></a>
+<span class="sourceLineNo">423</span><a name="line.423"></a>
+<span class="sourceLineNo">424</span> private static String getMyAddress()
{<a name="line.424"></a>
+<span class="sourceLineNo">425</span> try {<a name="line.425"></a>
+<span class="sourceLineNo">426</span> return
DNS.getDefaultHost("default", "default");<a name="line.426"></a>
+<span class="sourceLineNo">427</span> } catch (UnknownHostException uhe)
{<a name="line.427"></a>
+<span class="sourceLineNo">428</span> LOG.error("cannot determine my
address", uhe);<a name="line.428"></a>
+<span class="sourceLineNo">429</span> return null;<a name="line.429"></a>
+<span class="sourceLineNo">430</span> }<a name="line.430"></a>
+<span class="sourceLineNo">431</span> }<a name="line.431"></a>
+<span class="sourceLineNo">432</span><a name="line.432"></a>
+<span class="sourceLineNo">433</span> static boolean isRemote(String host)
{<a name="line.433"></a>
+<span class="sourceLineNo">434</span> return
!host.equalsIgnoreCase(MY_ADDRESS);<a name="line.434"></a>
+<span class="sourceLineNo">435</span> }<a name="line.435"></a>
+<span class="sourceLineNo">436</span><a name="line.436"></a>
+<span class="sourceLineNo">437</span> static void
incRPCCallsMetrics(ScanMetrics scanMetrics, boolean isRegionServerRemote) {<a
name="line.437"></a>
+<span class="sourceLineNo">438</span> if (scanMetrics == null) {<a
name="line.438"></a>
+<span class="sourceLineNo">439</span> return;<a name="line.439"></a>
+<span class="sourceLineNo">440</span> }<a name="line.440"></a>
+<span class="sourceLineNo">441</span>
scanMetrics.countOfRPCcalls.incrementAndGet();<a name="line.441"></a>
+<span class="sourceLineNo">442</span> if (isRegionServerRemote) {<a
name="line.442"></a>
+<span class="sourceLineNo">443</span>
scanMetrics.countOfRemoteRPCcalls.incrementAndGet();<a name="line.443"></a>
+<span class="sourceLineNo">444</span> }<a name="line.444"></a>
+<span class="sourceLineNo">445</span> }<a name="line.445"></a>
+<span class="sourceLineNo">446</span><a name="line.446"></a>
+<span class="sourceLineNo">447</span> static void
incRPCRetriesMetrics(ScanMetrics scanMetrics, boolean isRegionServerRemote) {<a
name="line.447"></a>
+<span class="sourceLineNo">448</span> if (scanMetrics == null) {<a
name="line.448"></a>
+<span class="sourceLineNo">449</span> return;<a name="line.449"></a>
+<span class="sourceLineNo">450</span> }<a name="line.450"></a>
+<span class="sourceLineNo">451</span>
scanMetrics.countOfRPCRetries.incrementAndGet();<a name="line.451"></a>
+<span class="sourceLineNo">452</span> if (isRegionServerRemote) {<a
name="line.452"></a>
+<span class="sourceLineNo">453</span>
scanMetrics.countOfRemoteRPCRetries.incrementAndGet();<a name="line.453"></a>
+<span class="sourceLineNo">454</span> }<a name="line.454"></a>
+<span class="sourceLineNo">455</span> }<a name="line.455"></a>
+<span class="sourceLineNo">456</span><a name="line.456"></a>
+<span class="sourceLineNo">457</span> static void
updateResultsMetrics(ScanMetrics scanMetrics, Result[] rrs,<a
name="line.457"></a>
+<span class="sourceLineNo">458</span> boolean isRegionServerRemote) {<a
name="line.458"></a>
+<span class="sourceLineNo">459</span> if (scanMetrics == null || rrs ==
null || rrs.length == 0) {<a name="line.459"></a>
+<span class="sourceLineNo">460</span> return;<a name="line.460"></a>
+<span class="sourceLineNo">461</span> }<a name="line.461"></a>
+<span class="sourceLineNo">462</span> long resultSize = 0;<a
name="line.462"></a>
+<span class="sourceLineNo">463</span> for (Result rr : rrs) {<a
name="line.463"></a>
+<span class="sourceLineNo">464</span> for (Cell cell : rr.rawCells()) {<a
name="line.464"></a>
+<span class="sourceLineNo">465</span> resultSize +=
CellUtil.estimatedSerializedSizeOf(cell);<a name="line.465"></a>
+<span class="sourceLineNo">466</span> }<a name="line.466"></a>
+<span class="sourceLineNo">467</span> }<a name="line.467"></a>
+<span class="sourceLineNo">468</span>
scanMetrics.countOfBytesInResults.addAndGet(resultSize);<a name="line.468"></a>
+<span class="sourceLineNo">469</span> if (isRegionServerRemote) {<a
name="line.469"></a>
+<span class="sourceLineNo">470</span>
scanMetrics.countOfBytesInRemoteResults.addAndGet(resultSize);<a
name="line.470"></a>
+<span class="sourceLineNo">471</span> }<a name="line.471"></a>
+<span class="sourceLineNo">472</span> }<a name="line.472"></a>
+<span class="sourceLineNo">473</span><a name="line.473"></a>
+<span class="sourceLineNo">474</span> /**<a name="line.474"></a>
+<span class="sourceLineNo">475</span> * Use the scan metrics returned by the
server to add to the identically named counters in the<a name="line.475"></a>
+<span class="sourceLineNo">476</span> * client side metrics. If a counter
does not exist with the same name as the server side metric,<a
name="line.476"></a>
+<span class="sourceLineNo">477</span> * the attempt to increase the counter
will fail.<a name="line.477"></a>
+<span class="sourceLineNo">478</span> */<a name="line.478"></a>
+<span class="sourceLineNo">479</span> static void
updateServerSideMetrics(ScanMetrics scanMetrics, ScanResponse response) {<a
name="line.479"></a>
+<span class="sourceLineNo">480</span> if (scanMetrics == null || response
== null || !response.hasScanMetrics()) {<a name="line.480"></a>
+<span class="sourceLineNo">481</span> return;<a name="line.481"></a>
+<span class="sourceLineNo">482</span> }<a name="line.482"></a>
+<span class="sourceLineNo">483</span>
ResponseConverter.getScanMetrics(response).forEach(scanMetrics::addToCounter);<a
name="line.483"></a>
+<span class="sourceLineNo">484</span> }<a name="line.484"></a>
+<span class="sourceLineNo">485</span><a name="line.485"></a>
+<span class="sourceLineNo">486</span> static void
incRegionCountMetrics(ScanMetrics scanMetrics) {<a name="line.486"></a>
+<span class="sourceLineNo">487</span> if (scanMetrics == null) {<a
name="line.487"></a>
+<span class="sourceLineNo">488</span> return;<a name="line.488"></a>
+<span class="sourceLineNo">489</span> }<a name="line.489"></a>
+<span class="sourceLineNo">490</span>
scanMetrics.countOfRegions.incrementAndGet();<a name="line.490"></a>
+<span class="sourceLineNo">491</span> }<a name="line.491"></a>
+<span class="sourceLineNo">492</span>}<a name="line.492"></a>
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+</div>
+</body>
+</html>
