How to run a jar file in hadoop
- by Arihant
I have created a jar file using the java file from this blog using following statements
javac -classpath /usr/local/hadoop/hadoop-core-1.0.3.jar -d /home/hduser/dir Dictionary.java
/usr/lib/jvm/jdk1.7.0_07/bin/jar cf Dictionary.jar /home/hduser/dir
Now i have tried running this jar in hadoop by hit and trial of various commands
1hduser@ubuntu:~$ /usr/local/hadoop/bin/hadoop jar Dictionary.jar
Output:
Warning: $HADOOP_HOME is deprecated.
RunJar jarFile [mainClass] args...
2.hduser@ubuntu:~$ /usr/local/hadoop/bin/hadoop jar Dictionary.jar Dictionary
Output:
Warning: $HADOOP_HOME is deprecated.
Exception in thread "main" java.lang.ClassNotFoundException: Dictionary
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
How can i run the jar in hadoop? I have the right DFS Locations as per needed by my program.
