java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

hadoop-general | Mohit Singh | 2 years ago
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    hadoop-general | 2 years ago | Mohit Singh
    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
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    Fwd: Running giraph custom code on CDH5.1.0

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    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
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    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
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    Stack Overflow | 2 years ago | Fraz
    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected
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    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected installation example

    Stack Overflow | 2 years ago | anu
    java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

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    Root Cause Analysis

    1. java.lang.IncompatibleClassChangeError

      Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

      at org.apache.giraph.bsp.BspOutputFormat.checkOutputSpecs()
    2. Apache Giraph Core
      BspOutputFormat.checkOutputSpecs
      1. org.apache.giraph.bsp.BspOutputFormat.checkOutputSpecs(BspOutputFormat.java:43)
      1 frame
    3. Hadoop
      Job$10.run
      1. org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:458)
      2. org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:343)
      3. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1295)
      4. org.apache.hadoop.mapreduce.Job$10.run(Job.java:1292)
      4 frames
    4. Java RT
      Subject.doAs
      1. java.security.AccessController.doPrivileged(Native Method)
      2. javax.security.auth.Subject.doAs(Subject.java:415)
      2 frames