【发布时间】：2015-04-02 13:49:45
【问题描述】：
我是 hbase 的新手，试图让它与 java 一起工作。我尝试了下面的代码它给出了一个异常请帮助。
package com.bee.searchlib.test;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
public class Test {
public static void main(String args[]) throws Exception {
Configuration config = HBaseConfiguration.create();
HBaseAdmin admin = null;
try {
// HBaseAdmin is where all the "DDL" like operations take place in
// HBase
admin = new HBaseAdmin(config);
} catch (MasterNotRunningException e) {
throw new Exception(
"Could not setup HBaseAdmin as no master is running, did you start HBase?...");
}
if (!admin.tableExists("testTable")) {
admin.createTable(new HTableDescriptor("testTable"));
// disable so we can make changes to it
admin.disableTable("testTable");
// lets add 2 columns
admin.addColumn("testTable", new HColumnDescriptor("firstName"));
admin.addColumn("testTable", new HColumnDescriptor("lastName"));
// enable the table for use
admin.enableTable("testTable");
}
// get the table so we can use it in the next set of examples
HTable table = new HTable(config, "testTable");
}
}
例外：
Exception in thread "main" 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:209)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:177)
at org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:229)
at org.apache.hadoop.security.KerberosName.<clinit>(KerberosName.java:83)
at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:202)
at org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:177)
at org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled(UserGroupInformation.java:229)
at org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:428)
at org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:414)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.hbase.util.Methods.call(Methods.java:37)
at org.apache.hadoop.hbase.security.User.call(User.java:586)
at org.apache.hadoop.hbase.security.User.callStatic(User.java:576)
at org.apache.hadoop.hbase.security.User.access$400(User.java:50)
at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:393)
at org.apache.hadoop.hbase.security.User$SecureHadoopUser.<init>(User.java:388)
at org.apache.hadoop.hbase.security.User.getCurrent(User.java:139)
at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionKey.<init>(HConnectionManager.java:412)
at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:182)
at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:98)
at com.bee.searchlib.test.Test.main(Test.java:20)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.configuration.Configuration
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 27 more
构建路径中的库 hadoop-core-1.0.0.jar hbase-0.92.1.jar log4j-1.2.16.jar commons-logging-1.1.1.jar
【问题讨论】：
标签： hbase