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POHbase Dependency Issue: NoClassDefFoundError RegionCoprocessorHost
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  1. POHbase Dependency Issue: NoClassDefFoundError RegionCoprocessorHost
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    copied!<p>I am trying to resolve the following error:</p> <pre><code>13/05/05 19:49:04 INFO handler.OpenRegionHandler: Opening of region {NAME =&gt; '-ROOT-,,0', STARTKEY =&gt; '', ENDKEY =&gt; '', ENCODED =&gt; 70236052,} failed, marking as FAILED_OPEN in ZK 13/05/05 19:49:04 INFO regionserver.HRegionServer: Received request to open region: -ROOT-,,0.70236052 13/05/05 19:49:04 INFO regionserver.HRegion: Setting up tabledescriptor config now ... 13/05/05 19:49:04 ERROR handler.OpenRegionHandler: Failed open of region=-ROOT-,,0.70236052, starting to roll back the global memstore size. java.lang.IllegalStateException: Could not instantiate a region instance. at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3747) at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3927) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:332) at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108) at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:175) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:680) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedConstructorAccessor17.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3744) ... 7 more Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost at org.apache.hadoop.hbase.regionserver.HRegion.&lt;init&gt;(HRegion.java:421) ... 11 more </code></pre> <p>I have the following Maven Dependency:</p> <pre><code>&lt;properties&gt; &lt;hadoopCDHMRVersion&gt;2.0.0-mr1-cdh4.2.0&lt;/hadoopCDHMRVersion&amp;gt; &lt;hadoopCDHVersion&gt;2.0.0-cdh4.2.0&lt;/hadoopCDHVersion&amp;gt; &lt;hbaseCDHVersion&gt;&lt;b&gt;0.94.2-cdh4.2.0&lt;/b&gt;&lt;/hbaseCDHVersion&gt; &lt;/properties&gt; &lt;dependencyManagement&gt; &lt;dependencies&gt; &lt;!-- Apache --&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt; &lt;artifactId&gt;hadoop-core&lt;/artifactId&gt; &lt;version&gt;${hadoopCDHMRVersion}&lt;/version&gt; &lt;exclusions&gt; &lt;exclusion&gt; &lt;groupId&gt;tomcat&lt;/groupId&gt; &lt;artifactId&gt;jasper-compiler&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;tomcat&lt;/groupId&gt; &lt;artifactId&gt;jasper-runtime&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt; &lt;artifactId&gt;hadoop-common&lt;/artifactId&gt; &lt;version&gt;${hadoopCDHVersion}&lt;/version&gt; &lt;exclusions&gt; &lt;exclusion&gt; &lt;groupId&gt;org.mockito&lt;/groupId&gt; &lt;artifactId&gt;mockito-all&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;junit&lt;/groupId&gt; &lt;artifactId&gt;junit&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;log4j&lt;/groupId&gt; &lt;artifactId&gt;log4j&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;tomcat&lt;/groupId&gt; &lt;artifactId&gt;jasper-compiler&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;tomcat&lt;/groupId&gt; &lt;artifactId&gt;jasper-runtime&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;org.mortbay.jetty&lt;/groupId&gt; &lt;artifactId&gt;jetty&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;exclusion&gt; &lt;groupId&gt;org.mortbay.jetty&lt;/groupId&gt; &lt;artifactId&gt;jetty-util&lt;/artifactId&gt; &lt;/exclusion&gt; &lt;/exclusions&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt; &lt;artifactId&gt;hadoop-hdfs&lt;/artifactId&gt; &lt;version&gt;${hadoopCDHVersion}&lt;/version&gt; &lt;/dependency&gt; &lt;!-- Test --&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hbase&lt;/groupId&gt; &lt;artifactId&gt;hbase&lt;/artifactId&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;classifier&gt;tests&lt;/classifier&gt; &lt;version&gt;${hbaseCDHVersion}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hbase&lt;/groupId&gt; &lt;artifactId&gt;hbase&lt;/artifactId&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;version&gt;${hbaseCDHVersion}&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt; &lt;artifactId&gt;hadoop-test&lt;/artifactId&gt; &lt;version&gt;${hadoopCDHMRVersion}&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.hadoop&lt;/groupId&gt; &lt;artifactId&gt;hadoop-minicluster&lt;/artifactId&gt; &lt;version&gt;${hadoopCDHMRVersion}&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;dependencies&gt; &lt;/dependencyManagement&gt; </code></pre> <p>I am bringing the dependency from parent pom to child pom. The code that I test against:</p> <p><code></p> <pre><code>//Started a mini cluster to perform unit test final Configuration startingConf = HBaseConfiguration.create(); startingConf.setLong("hbase.client.keyvalue.maxsize", 65536); startingConf.setStrings(HConstants.ZOOKEEPER_QUORUM, "localhost"); startingConf.setStrings("mapreduce.jobtracker.address", "local"); startingConf.setLong(HConstants.HBASE_CLIENT_PAUSE, 50); startingConf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 200); testUtil = new HBaseTestingUtility(startingConf); //point of failure testUtil.startMiniCluster(); </code></pre> <p></code><br> I get the error at after startMiniCluster() It does most of the work of instantiating environment, but drop in between due to above error. Things I tried:</p> <ol> <li>If I roll back from hbaseCDHVersion 0.94.2-cdh4.2.0 to any version of 0.92.1-cdh4.X.X, it works.</li> <li>Removed .m2 cache completely and see to it that only 0.94.2-cdh4.2.0 is created.</li> <li>Tried almost all versions of 0.94.2-cdh4.X.X</li> <li>I run mvn clean and install via commandline and not relying on eclipse to do magic, aslo tried eclipse:eclipse.</li> <li>Check the type/resource through eclipse for the missing class and it points to the correct version of the local repo, so I can find it via eclipse.</li> <li>Observe dependency tree for any conflicts. </li> <li>I also opened the repo jar by myself and saw the class exists. </li> <li>Tried creating a new project and create pom file from scratch. </li> </ol> <p>Any pointers are greatly appreciated. </p>
 

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