I am new to hadoop programming.I am using eclipse for hadoop development.I added all jar files through java buildpath when i run my program it is not running and giving this error,so please help me.how to solve error?
14/05/31 23:33:10 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
14/05/31 23:33:10 WARN mapred.JobClient: No job jar file set. User classes may not be found. See JobConf(Class) or JobConf#setJar(String).
14/05/31 23:33:10 INFO mapred.JobClient: Cleaning up the staging area file:/tmp/hadoop-deep/mapred/staging/deep689130586/.staging/job_local689130586_0001
14/05/31 23:33:10 ERROR security.UserGroupInformation: PriviledgedActionException as:deep cause:org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory file:/ already exists
Exception in thread "main" org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory file:/ already exists
at org.apache.hadoop.mapred.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:121)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:975)
at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:936)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1190)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:936)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:910)
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1353)
at hadoop1.MyJob.run(MyJob.java:57)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at hadoop1.MyJob.main(MyJob.java:63)
