org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory tachyon://10.10.1.1:19998/wordcount/output already exists

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    Google Groups | 1 year ago | Nishant Agrawal
    org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory tachyon://10.10.1.1:19998/wordcount/output already exists
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    org.apache.hadoop.mapred.FileAlreadyExistsException: **Output directory hdfs://localhost:54310/user/output already exists**
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    org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory hdfs://mycluster/user/training/output already exists
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    File system access exception in hadoop map reduce

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    org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory hdfs://localhost:9000/user/ifs-admin/output already exists

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    Root Cause Analysis

    1. org.apache.hadoop.mapred.FileAlreadyExistsException

      Output directory tachyon://10.10.1.1:19998/wordcount/output already exists

      at org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.checkOutputSpecs()
    2. Hadoop
      Job$10.run
      1. org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.checkOutputSpecs(FileOutputFormat.java:146)
      2. org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:562)
      3. org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:432)
      4. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
      5. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
      5 frames
    3. Java RT
      Subject.doAs
      1. java.security.AccessController.doPrivileged(Native Method)
      2. javax.security.auth.Subject.doAs(Subject.java:415)
      2 frames
    4. Hadoop
      UserGroupInformation.doAs
      1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
      1 frame
    5. Hadoop
      Job.waitForCompletion
      1. org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
      2. org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
      2 frames
    6. Apache Hadoop MapReduce Examples
      WordCount.main
      1. org.apache.hadoop.examples.WordCount.main(WordCount.java:87)
      1 frame
    7. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:606)
      4 frames
    8. Hadoop
      ProgramDriver.run
      1. org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)
      2. org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
      2 frames
    9. Apache Hadoop MapReduce Examples
      ExampleDriver.main
      1. org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
      1 frame
    10. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      4. java.lang.reflect.Method.invoke(Method.java:606)
      4 frames
    11. Hadoop
      RunJar.main
      1. org.apache.hadoop.util.RunJar.run(RunJar.java:221)
      2. org.apache.hadoop.util.RunJar.main(RunJar.java:136)
      2 frames