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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.mapred;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.fail;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import java.io.IOException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseTestingUtil;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.HConstants;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.io.ImmutableBytesWritable;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.mapred.JobConf;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.mapred.RecordWriter;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.junit.AfterClass;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.junit.Before;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.junit.ClassRule;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.junit.Test;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.slf4j.Logger;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">038</span><span id="line-38"></span> |
| <span class="source-line-no">039</span><span id="line-39">/**</span> |
| <span class="source-line-no">040</span><span id="line-40"> * Spark creates many instances of TableOutputFormat within a single process. We need to make sure</span> |
| <span class="source-line-no">041</span><span id="line-41"> * we can have many instances and not leak connections. This test creates a few TableOutputFormats</span> |
| <span class="source-line-no">042</span><span id="line-42"> * and shouldn't fail due to ZK connection exhaustion.</span> |
| <span class="source-line-no">043</span><span id="line-43"> */</span> |
| <span class="source-line-no">044</span><span id="line-44">@Category(MediumTests.class)</span> |
| <span class="source-line-no">045</span><span id="line-45">public class TestTableOutputFormatConnectionExhaust {</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> @ClassRule</span> |
| <span class="source-line-no">048</span><span id="line-48"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">049</span><span id="line-49"> HBaseClassTestRule.forClass(TestTableOutputFormatConnectionExhaust.class);</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> private static final Logger LOG =</span> |
| <span class="source-line-no">052</span><span id="line-52"> LoggerFactory.getLogger(TestTableOutputFormatConnectionExhaust.class);</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> private final static HBaseTestingUtil UTIL = new HBaseTestingUtil();</span> |
| <span class="source-line-no">055</span><span id="line-55"> static final String TABLE = "TestTableOutputFormatConnectionExhaust";</span> |
| <span class="source-line-no">056</span><span id="line-56"> static final String FAMILY = "family";</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> @BeforeClass</span> |
| <span class="source-line-no">059</span><span id="line-59"> public static void beforeClass() throws Exception {</span> |
| <span class="source-line-no">060</span><span id="line-60"> // Default in ZookeeperMiniCluster is 1000, setting artificially low to trigger exhaustion.</span> |
| <span class="source-line-no">061</span><span id="line-61"> // need min of 7 to properly start the default mini HBase cluster</span> |
| <span class="source-line-no">062</span><span id="line-62"> UTIL.getConfiguration().setInt(HConstants.ZOOKEEPER_MAX_CLIENT_CNXNS, 10);</span> |
| <span class="source-line-no">063</span><span id="line-63"> UTIL.startMiniCluster();</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> @AfterClass</span> |
| <span class="source-line-no">067</span><span id="line-67"> public static void afterClass() throws Exception {</span> |
| <span class="source-line-no">068</span><span id="line-68"> UTIL.shutdownMiniCluster();</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> @Before</span> |
| <span class="source-line-no">072</span><span id="line-72"> public void before() throws IOException {</span> |
| <span class="source-line-no">073</span><span id="line-73"> LOG.info("before");</span> |
| <span class="source-line-no">074</span><span id="line-74"> UTIL.ensureSomeRegionServersAvailable(1);</span> |
| <span class="source-line-no">075</span><span id="line-75"> LOG.info("before done");</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> /**</span> |
| <span class="source-line-no">079</span><span id="line-79"> * Open and close a TableOutputFormat. The closing the RecordWriter should release HBase</span> |
| <span class="source-line-no">080</span><span id="line-80"> * Connection (ZK) resources, and will throw exception if they are exhausted.</span> |
| <span class="source-line-no">081</span><span id="line-81"> */</span> |
| <span class="source-line-no">082</span><span id="line-82"> static void openCloseTableOutputFormat(int iter) throws IOException {</span> |
| <span class="source-line-no">083</span><span id="line-83"> LOG.info("Instantiating TableOutputFormat connection " + iter);</span> |
| <span class="source-line-no">084</span><span id="line-84"> JobConf conf = new JobConf();</span> |
| <span class="source-line-no">085</span><span id="line-85"> conf.addResource(UTIL.getConfiguration());</span> |
| <span class="source-line-no">086</span><span id="line-86"> conf.set(TableOutputFormat.OUTPUT_TABLE, TABLE);</span> |
| <span class="source-line-no">087</span><span id="line-87"> TableMapReduceUtil.initTableMapJob(TABLE, FAMILY, TableMap.class, ImmutableBytesWritable.class,</span> |
| <span class="source-line-no">088</span><span id="line-88"> ImmutableBytesWritable.class, conf);</span> |
| <span class="source-line-no">089</span><span id="line-89"> TableOutputFormat tof = new TableOutputFormat();</span> |
| <span class="source-line-no">090</span><span id="line-90"> RecordWriter rw = tof.getRecordWriter(null, conf, TABLE, null);</span> |
| <span class="source-line-no">091</span><span id="line-91"> rw.close(null);</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"></span> |
| <span class="source-line-no">094</span><span id="line-94"> @Test</span> |
| <span class="source-line-no">095</span><span id="line-95"> public void testConnectionExhaustion() throws IOException {</span> |
| <span class="source-line-no">096</span><span id="line-96"> int MAX_INSTANCES = 5; // fails on iteration 3 if zk connections leak</span> |
| <span class="source-line-no">097</span><span id="line-97"> for (int i = 0; i < MAX_INSTANCES; i++) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> final int iter = i;</span> |
| <span class="source-line-no">099</span><span id="line-99"> try {</span> |
| <span class="source-line-no">100</span><span id="line-100"> openCloseTableOutputFormat(iter);</span> |
| <span class="source-line-no">101</span><span id="line-101"> } catch (Exception e) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> LOG.error("Exception encountered", e);</span> |
| <span class="source-line-no">103</span><span id="line-103"> fail("Failed on iteration " + i);</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> }</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108">}</span> |
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| </pre> |
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