java NoClassDefFoundError: org/apache/hadoop/conf/Configuration
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NoClassDefFoundError: org/apache/hadoop/conf/Configuration
提问by Hüseyin Kuyucu
I am trying to install oozie and getting this error.I have hadoop 2.7.1, maven 3.3.3 .Any suggestion on this?
我正在尝试安装 oozie 并收到此错误。我有 hadoop 2.7.1、maven 3.3.3。对此有什么建议吗？
huseyin@ubuntu:~$ '/usr/local/oozie/oozie/Oozie/oozie-4.3.0-SNAPSHOT/bin/oozie-setup.sh' sharelib create -fs hdfs://hadoopcluster:10000 setting CATALINA_OPTS="$CATALINA_OPTS -Xmx1024m"
Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetMethodRecursive(Class.java:3048) at java.lang.Class.getMethod0(Class.java:3018) at java.lang.Class.getMethod(Class.java:1784) at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526) Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 7 more
huseyin@ubuntu:~$ '/usr/local/oozie/oozie/Oozie/oozie-4.3.0-SNAPSHOT/bin/oozie-setup.sh' sharelib create -fs hdfs://hadoopcluster:10000 setting CATALINA_OPTS="$ CATALINA_OPTS -Xmx1024m"
错误：发生 JNI 错误，请检查您的安装并重试线程“main”中的异常 java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration at java.lang.Class.getDeclaredMethods0(Native Method) at java .lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetMethodRecursive(Class.java:3048) at java.lang.Class.getMethod0(Class.java:3018) at java.lang.Class。 getMethod(Class.java:1784) at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526) 引起：java.lang.ClassNotFoundException: org.apache .hadoop.conf.Configuration at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 在 sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) 在 java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 7 更多
回答by Ahmed Kamal
You need to add all the needed jars for oozie to a new folder in your working directory (oozie-4.3.0-SNAPSHOT) called libext , please check the following paragraph from oozie docs
您需要将 oozie 所需的所有 jar 添加到您的工作目录 (oozie-4.3.0-SNAPSHOT) 中名为 libext 的新文件夹中，请查看 oozie docs 中的以下段落
By default, oozie war will not contain hadoop and hcatalog libraries, however they are required for oozie to work.
There are 2 options to add these libraries:
At install time, copy the hadoop and hcatalog libraries to libext and run oozie-setup.sh to setup oozie war.
Build with -Puber which will bundle the required libraries in the oozie war.
默认情况下，oozie war 将不包含 hadoop 和 hcatalog 库，但它们是 oozie 工作所必需的。
有两个选项可以添加这些库：
在安装时，将 hadoop 和 hcatalog 库复制到 libext 并运行 oozie-setup.sh 以设置 oozie war。
使用 -Puber 构建，它将在 oozie War中捆绑所需的库。
so to solve the problem you need to :
所以要解决你需要的问题：
1- Create a libext/ directory in the directory where Oozie was expanded.
1- 在 Oozie 展开的目录中创建一个 libext/ 目录。
2- If using the ExtJS library copy the ZIP file to the libext/ directory.
2- 如果使用 ExtJS 库，请将 ZIP 文件复制到 libext/ 目录。
3- If hadoop and hcatalog libraries are not already included in the war, add the corresponding libraries to libext/ directory. (In your case ) , you can just copy all the jars from your hadoop project project to the libext folder.
3- 如果 war 中尚未包含 hadoop 和 hcatalog 库，请将相应的库添加到 libext/ 目录中。（在您的情况下），您可以将所有 jars 从您的 hadoop 项目项目复制到 libext 文件夹。
Important Note: the versions of the jars inside the libext folder should match the versions of those installed during the build process.
重要说明：libext 文件夹中的 jar 版本应与构建过程中安装的版本相匹配。
You can find the versions of the ones downloaded in the pom file you used during the build process.
您可以在构建过程中使用的 pom 文件中找到下载的版本。
回答by Yousef Irman
cp $HADOOP_HOME/share/hadoop/**/*.jar libext/
cp $HADOOP_HOME/share/hadoop/common/*.jar libext/
cp $HADOOP_HOME/share/hadoop/common/lib/*.jar libext/
cp $HADOOP_HOME/share/hadoop/hdfs/lib/*.jar libext/
cp $HADOOP_HOME/share/hadoop/hdfs/*.jar libext/
cp $HADOOP_HOME/share/hadoop/mapreduce/*.jar libext/
cp $HADOOP_HOME/share/hadoop/mapreduce/lib/*.jar libext/
cp $HADOOP_HOME/share/hadoop/yarn/lib/*.jar libext/
cp $HADOOP_HOME/share/hadoop/yarn/*.jar libext/
