| <!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 org.apache.hadoop.hbase.client.MetricsConnection.CLIENT_SIDE_METRICS_ENABLED_KEY;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import static org.junit.Assert.assertEquals;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import static org.junit.Assert.assertNotEquals;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import static org.junit.Assert.assertNotNull;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import static org.junit.Assert.assertTrue;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span><a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import java.io.IOException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import java.util.concurrent.CountDownLatch;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.concurrent.TimeUnit;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.concurrent.atomic.AtomicLong;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.hadoop.conf.Configuration;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseTestingUtil;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.HConstants;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.ServerName;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.TableName;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.backoff.ClientBackoffPolicy;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.backoff.ExponentialClientBackoffPolicy;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.backoff.ServerStatistics;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.regionserver.HRegionServer;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.regionserver.Region;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>import org.junit.AfterClass;<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>import org.junit.BeforeClass;<a name="line.43"></a> |
| <span class="sourceLineNo">044</span>import org.junit.Test;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span>import org.slf4j.Logger;<a name="line.45"></a> |
| <span class="sourceLineNo">046</span>import org.slf4j.LoggerFactory;<a name="line.46"></a> |
| <span class="sourceLineNo">047</span><a name="line.47"></a> |
| <span class="sourceLineNo">048</span>/**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Test that we can actually send and use region metrics to slowdown client writes<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> */<a name="line.50"></a> |
| <span class="sourceLineNo">051</span>public abstract class ClientPushbackTestBase {<a name="line.51"></a> |
| <span class="sourceLineNo">052</span><a name="line.52"></a> |
| <span class="sourceLineNo">053</span> private static final Logger LOG = LoggerFactory.getLogger(ClientPushbackTestBase.class);<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> protected static final HBaseTestingUtil UTIL = new HBaseTestingUtil();<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> protected static final TableName tableName = TableName.valueOf("client-pushback");<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> private static final byte[] family = Bytes.toBytes("f");<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private static final byte[] qualifier = Bytes.toBytes("q");<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private static final long flushSizeBytes = 512;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span><a name="line.60"></a> |
| <span class="sourceLineNo">061</span> @BeforeClass<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> public static void setupCluster() throws Exception {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> Configuration conf = UTIL.getConfiguration();<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> // enable backpressure<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> conf.setBoolean(HConstants.ENABLE_CLIENT_BACKPRESSURE, true);<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> // use the exponential backoff policy<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> conf.setClass(ClientBackoffPolicy.BACKOFF_POLICY_CLASS, ExponentialClientBackoffPolicy.class,<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> ClientBackoffPolicy.class);<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> // turn the memstore size way down so we don't need to write a lot to see changes in memstore<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> // load<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> conf.setLong(HConstants.HREGION_MEMSTORE_FLUSH_SIZE, flushSizeBytes);<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> // ensure we block the flushes when we are double that flushsize<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> conf.setLong(HConstants.HREGION_MEMSTORE_BLOCK_MULTIPLIER,<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> HConstants.DEFAULT_HREGION_MEMSTORE_BLOCK_MULTIPLIER);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> conf.setBoolean(CLIENT_SIDE_METRICS_ENABLED_KEY, true);<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> UTIL.startMiniCluster(1);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> UTIL.createTable(tableName, family);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> @AfterClass<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> public static void cleanupCluster() throws Exception {<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> UTIL.shutdownMiniCluster();<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> }<a name="line.83"></a> |
| <span class="sourceLineNo">084</span><a name="line.84"></a> |
| <span class="sourceLineNo">085</span> protected abstract ClientBackoffPolicy getBackoffPolicy() throws IOException;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> protected abstract ServerStatisticTracker getStatisticsTracker() throws IOException;<a name="line.87"></a> |
| <span class="sourceLineNo">088</span><a name="line.88"></a> |
| <span class="sourceLineNo">089</span> protected abstract MetricsConnection getConnectionMetrics() throws IOException;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span><a name="line.90"></a> |
| <span class="sourceLineNo">091</span> protected abstract void mutate(Put put) throws IOException;<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> protected abstract void mutate(Put put, AtomicLong endTime, CountDownLatch latch)<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> throws IOException;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span><a name="line.95"></a> |
| <span class="sourceLineNo">096</span> protected abstract void mutateRow(RowMutations mutations) throws IOException;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> @Test<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> public void testClientTracksServerPushback() throws Exception {<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> HRegionServer rs = UTIL.getHBaseCluster().getRegionServer(0);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> Region region = rs.getRegions(tableName).get(0);<a name="line.101"></a> |
| <span class="sourceLineNo">102</span><a name="line.102"></a> |
| <span class="sourceLineNo">103</span> LOG.debug("Writing some data to " + tableName);<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> // write some data<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> Put p = new Put(Bytes.toBytes("row"));<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> p.addColumn(family, qualifier, Bytes.toBytes("value1"));<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> mutate(p);<a name="line.107"></a> |
| <span class="sourceLineNo">108</span><a name="line.108"></a> |
| <span class="sourceLineNo">109</span> // get the current load on RS. Hopefully memstore isn't flushed since we wrote the the data<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> int load = (int) ((region.getMemStoreHeapSize() * 100) / flushSizeBytes);<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> LOG.debug("Done writing some data to " + tableName);<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> // get the stats for the region hosting our table<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> ClientBackoffPolicy backoffPolicy = getBackoffPolicy();<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> assertTrue("Backoff policy is not correctly configured",<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> backoffPolicy instanceof ExponentialClientBackoffPolicy);<a name="line.116"></a> |
| <span class="sourceLineNo">117</span><a name="line.117"></a> |
| <span class="sourceLineNo">118</span> ServerStatisticTracker stats = getStatisticsTracker();<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> assertNotNull("No stats configured for the client!", stats);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> // get the names so we can query the stats<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> ServerName server = rs.getServerName();<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> byte[] regionName = region.getRegionInfo().getRegionName();<a name="line.122"></a> |
| <span class="sourceLineNo">123</span><a name="line.123"></a> |
| <span class="sourceLineNo">124</span> // check to see we found some load on the memstore<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> ServerStatistics serverStats = stats.getStats(server);<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> ServerStatistics.RegionStatistics regionStats = serverStats.getStatsForRegion(regionName);<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> assertEquals("We did not find some load on the memstore", load,<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> regionStats.getMemStoreLoadPercent());<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> // check that the load reported produces a nonzero delay<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> long backoffTime = backoffPolicy.getBackoffTime(server, regionName, serverStats);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> assertNotEquals("Reported load does not produce a backoff", 0, backoffTime);<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> LOG.debug("Backoff calculated for " + region.getRegionInfo().getRegionNameAsString() + " @ "<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> + server + " is " + backoffTime);<a name="line.133"></a> |
| <span class="sourceLineNo">134</span><a name="line.134"></a> |
| <span class="sourceLineNo">135</span> CountDownLatch latch = new CountDownLatch(1);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> AtomicLong endTime = new AtomicLong();<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> long startTime = EnvironmentEdgeManager.currentTime();<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> mutate(p, endTime, latch);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> // Currently the ExponentialClientBackoffPolicy under these test conditions<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> // produces a backoffTime of 151 milliseconds. This is long enough so the<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> // wait and related checks below are reasonable. Revisit if the backoff<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> // time reported by above debug logging has significantly deviated.<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> MetricsConnection metrics = getConnectionMetrics();<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> String name = server.getServerName() + "," + Bytes.toStringBinary(regionName);<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> MetricsConnection.RegionStats rsStats = metrics.serverStats.get(server).get(regionName);<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> assertEquals(name, rsStats.name);<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> assertEquals(rsStats.heapOccupancyHist.getSnapshot().getMean(),<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> (double) regionStats.getHeapOccupancyPercent(), 0.1);<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> assertEquals(rsStats.memstoreLoadHist.getSnapshot().getMean(),<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> (double) regionStats.getMemStoreLoadPercent(), 0.1);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> MetricsConnection.RunnerStats runnerStats = metrics.runnerStats;<a name="line.152"></a> |
| <span class="sourceLineNo">153</span><a name="line.153"></a> |
| <span class="sourceLineNo">154</span> assertEquals(1, runnerStats.delayRunners.getCount());<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> assertEquals(1, runnerStats.normalRunners.getCount());<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> assertEquals("", runnerStats.delayIntevalHist.getSnapshot().getMean(), (double) backoffTime,<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> 0.1);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span><a name="line.158"></a> |
| <span class="sourceLineNo">159</span> latch.await(backoffTime * 2, TimeUnit.MILLISECONDS);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> assertNotEquals("AsyncProcess did not submit the work time", 0, endTime.get());<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> assertTrue("AsyncProcess did not delay long enough", endTime.get() - startTime >= backoffTime);<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> }<a name="line.162"></a> |
| <span class="sourceLineNo">163</span><a name="line.163"></a> |
| <span class="sourceLineNo">164</span> @Test<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> public void testMutateRowStats() throws IOException {<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> HRegionServer rs = UTIL.getHBaseCluster().getRegionServer(0);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> Region region = rs.getRegions(tableName).get(0);<a name="line.167"></a> |
| <span class="sourceLineNo">168</span><a name="line.168"></a> |
| <span class="sourceLineNo">169</span> RowMutations mutations = new RowMutations(Bytes.toBytes("row"));<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> Put p = new Put(Bytes.toBytes("row"));<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> p.addColumn(family, qualifier, Bytes.toBytes("value2"));<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> mutations.add(p);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> mutateRow(mutations);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span><a name="line.174"></a> |
| <span class="sourceLineNo">175</span> ServerStatisticTracker stats = getStatisticsTracker();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> assertNotNull("No stats configured for the client!", stats);<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> // get the names so we can query the stats<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> ServerName server = rs.getServerName();<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> byte[] regionName = region.getRegionInfo().getRegionName();<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // check to see we found some load on the memstore<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> ServerStatistics serverStats = stats.getStats(server);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> ServerStatistics.RegionStatistics regionStats = serverStats.getStatsForRegion(regionName);<a name="line.183"></a> |
| <span class="sourceLineNo">184</span><a name="line.184"></a> |
| <span class="sourceLineNo">185</span> assertNotNull(regionStats);<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> assertTrue(regionStats.getMemStoreLoadPercent() > 0);<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> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </body> |
| </html> |