我正在尝试使用hadoop/hbase sampler来连接和扫描在hbase中创建的表，但是我的测试失败了，出现以下消息。
检查了hadoop/hbase的配置，所有服务都在运行并监听相应的端口(Zookeeper正在跑步，听2181）。

2016/04/02 15:44:04 ERROR - jmeter.threads.JMeterThread: Test failed! java.lang.NoClassDefFoundError: org/apache/commons/configuration/Configuration
at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<init>(DefaultMetricsSystem.java:37)
at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<clinit>(DefaultMetricsSystem.java:34)
at org.apache.hadoop.security.UgiInstrumentation.create(UgiInstrumentation.java:51)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:217)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:185)
at org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:237)
at org.apache.hadoop.security.KerberosName.<clinit>(KerberosName.java:79)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:210)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:185)
at org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:237)
at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:482)
at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:468)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.hadoop.hbase.util.Methods.call(Methods.java:37)
at org.apache.hadoop.hbase.security.User.call(User.java:590)
at org.apache.hadoop.hbase.security.User.callStatic(User.java:580)
at org.apache.hadoop.hbase.security.User.access$400(User.java:51)
at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:397)
at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:392)
at org.apache.hadoop.hbase.security.User.getCurrent(User.java:140)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionKey.<init>(HConnectionManager.java:435)
at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:180)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:155)
at org.apache.hadoop.hbase.client.HTableFactory.createHTableInterface(HTableFactory.java:36)
at org.apache.hadoop.hbase.client.HTablePool.createHTable(HTablePool.java:265)
at org.apache.hadoop.hbase.client.HTablePool.findOrCreateTable(HTablePool.java:195)
at org.apache.hadoop.hbase.client.HTablePool.getTable(HTablePool.java:174)
at com.atlantbh.jmeter.plugins.hbasecomponents.config.HBaseConnectionVariable.getTable(HBaseConnectionVariable.java:43)
at com.atlantbh.jmeter.plugins.hbasecomponents.samplers.HBaseScanSampler.sample(HBaseScanSampler.java:94)
at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:434)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:261)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.configuration.Configuration
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 35 more**