java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/MasterNotRunningException
我是用自己的 HBase java 客户端代码创建的，但是我在编译它并让它运行时遇到了非常困难的时间。我正在从命令行进行编译，但我无法找到任何说明如何执行此操作，或者我的类路径上需要有哪些 jar。
下面是我正在使用的类路径：
$HADOOP_HOME/hadoop/hadoop-0.20.2/hadoop-0.20.2-core.jar:
$HADOOP_HOME/hbase/hbase-0.90.0/hbase-0.90.0.jar:
$HADOOP_HOME/hbase/lib/zookeeper-3.3.2.jar
当我运行 javac 命令时，它可以正常编译。但是，当我运行 java 代码时，出现以下错误：
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/MasterNotRunningException
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.MasterNotRunningException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: HBaseConnection. Program will exit.
我缺少什么？
谢谢！
I created by own HBase java client code, but I am having a really difficult time compiling it and getting it to run. I am compiling from the command line, and I havent been able to find any instructions how to do this, or what jars I need to have on my classpath.
Below is the classpath I'm using:
$HADOOP_HOME/hadoop/hadoop-0.20.2/hadoop-0.20.2-core.jar:
$HADOOP_HOME/hbase/hbase-0.90.0/hbase-0.90.0.jar:
$HADOOP_HOME/hbase/lib/zookeeper-3.3.2.jar
When I run the javac command, it compiles fine. However, when I run my java code, I get the below error:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/MasterNotRunningException
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.MasterNotRunningException
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: HBaseConnection. Program will exit.
What am I missing?
Thanks!
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类 org.apache.hadoop.hbase.MasterNotRunning 在类路径上不可用。您很可能没有设置类路径来包含 hadoop jar。这可以像拼写错误一样简单（并且 $HOME 必须扩展）。
The class org.apache.hadoop.hbase.MasterNotRunning is not available on the classpath. You most likely have not set up the classpath to include the hadoop jar. This can be as simple as a misspelling (and $HOME must be expanded).
确保本机文件是在系统中新构建的。
错误：
[hduser@master sbin]$ hadoop fs -ls /
16/07/17 15:38:17 WARN util.NativeCodeLoader：无法为您的平台加载本机hadoop库...在适用的情况下使用内置java类
找到5 项目
drwxr-xr-x - hduser supergroup 0 2016-07-17 10:57 /cm
正确
[hduser@master sbin]$ hadoop fs -ls /
找到 5 项
drwxr-xr-x - hduser supergroup 0 2016-07-17 10 :57 /cm
配置错误，请按照以下链接进行构建
http://www.myiphoneadventure.com/hardware/hadoop-build-native-library
对于 RHL 6 GLIBC_2.12 上的 Hadoop 2.7.2 ，您可以使用
https://github.com/sterin501/SecureHadoop/tree/master/native
对于完整的 hadoop 2.7.2 设置：
http://wccandlinux.blogspot.in/2016 /07/how-to-configure-hadoop-with-kerberos.html
Make sure that native files are newly build in the system .
Wrong:
[hduser@master sbin]$ hadoop fs -ls /
16/07/17 15:38:17 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Found 5 items
drwxr-xr-x - hduser supergroup 0 2016-07-17 10:57 /cm
Correct
[hduser@master sbin]$ hadoop fs -ls /
Found 5 items
drwxr-xr-x - hduser supergroup 0 2016-07-17 10:57 /cm
in wrong configuration , follow below link to build it
http://www.myiphoneadventure.com/hardware/hadoop-build-native-library
For Hadoop 2.7.2 on RHL 6 GLIBC_2.12 , you can use
https://github.com/sterin501/SecureHadoop/tree/master/native
For Complete hadoop 2.7.2 setup :
http://wccandlinux.blogspot.in/2016/07/how-to-configure-hadoop-with-kerberos.html