java.io.IOException: wrong value class: blah_blah_as_string is not class blah_blah

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    medicalbioinformatics.de | 1 month ago
    java.io.IOException: wrong value class: blah_blah_as_string is not class blah_blah
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    CSE 124: Lab 2 - Hadoop

    ucsd.edu | 7 months ago
    java.io.IOException: wrong value class: blah_blah_as_string is not class blah_blah
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    CSE 124: Lab 2 - Hadoop

    ucsd.edu | 1 month ago
    java.io.IOException: wrong value class: blah_blah_as_string is not class blah_blah
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    readlinkdb fails to dump linkdb

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    org.apache.nutch.crawl.CrawlDatum

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    Root Cause Analysis

    1. java.io.IOException

      wrong value class: blah_blah_as_string is not class blah_blah

      at org.apache.hadoop.io.SequenceFile$Writer.append()
    2. Hadoop
      SequenceFile$Writer.append
      1. org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java:171)
      1 frame
    3. Hadoop
      CombiningCollector.collect
      1. org.apache.hadoop.mapred.MapTask$2.collect(MapTask.java:147)
      2. org.apache.hadoop.mapred.lib.IdentityReducer.reduce(IdentityReducer.java:39)
      3. org.apache.hadoop.mapred.CombiningCollector.flush(CombiningCollector.java:79)
      4. org.apache.hadoop.mapred.CombiningCollector.collect(CombiningCollector.java:71)
      4 frames
    4. edu.ucsd.cs
      Spellcheck$MapSpellcheck.map
      1. edu.ucsd.cs.fa07.cse124.proj2.examples.Spellcheck$MapSpellcheck.map(Spellcheck.java:149)
      1 frame
    5. Hadoop
      TaskTracker$Child.main
      1. org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:46)
      2. org.apache.hadoop.mapred.MapTask.run(MapTask.java:196)
      3. org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1075)
      3 frames