java.io.IOException: can't find class: org.apache.nutch.protocol.ProtocolStatus because org.apache.nutch.protocol.ProtocolStatus

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    nutch-dev | 3 years ago | Tejas Patil (JIRA)
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    hama-user | 3 years ago | ikapoura@csd.auth.gr
    java.io.IOException: can't find class: testhamayoon.TestHamaYoon$MyWritable >> because testhamayoon.TestHamaYoon$MyWritable >> >> at >> org.apache.hadoop.io.AbstractMapWritable.readFields(AbstractMapWritable.java:204) >> at org.apache.hadoop.io.MapWritable.readFields(MapWritable.java:146) >> at >> org.apache.hama.graph.GraphJobMessage.readFields(GraphJobMessage.java:129) >> at >> org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:108) >> at >> org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:78) >> at >> org.apache.hama.bsp.LocalBSPRunner$LocalMessageManager.transfer(LocalBSPRunner.java:356) >> at org.apache.hama.bsp.BSPPeerImpl.sync(BSPPeerImpl.java:381) >> at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:133) >> at >> org.apache.hama.bsp.LocalBSPRunner$BSPRunner.run(LocalBSPRunner.java:258) >> at >> org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:288) >> at >> org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:212) >> at >> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) >> at java.util.concurrent.FutureTask.run(FutureTask.java:138)

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    Root Cause Analysis

    1. java.io.IOException

      can't find class: org.apache.nutch.protocol.ProtocolStatus because org.apache.nutch.protocol.ProtocolStatus

      at org.apache.hadoop.io.AbstractMapWritable.readFields()
    2. Hadoop
      MapWritable.readFields
      1. org.apache.hadoop.io.AbstractMapWritable.readFields(AbstractMapWritable.java:204)
      2. org.apache.hadoop.io.MapWritable.readFields(MapWritable.java:146)
      2 frames
    3. Apache Nutch
      CrawlDatum.readFields
      1. org.apache.nutch.crawl.CrawlDatum.readFields(CrawlDatum.java:280)
      1 frame
    4. Hadoop
      MapFile$Reader.next
      1. org.apache.hadoop.io.SequenceFile$Reader.getCurrentValue(SequenceFile.java:1813)
      2. org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1941)
      3. org.apache.hadoop.io.MapFile$Reader.next(MapFile.java:517)
      3 frames
    5. org.apache.nutch
      SegmentReader.main
      1. org.apache.nutch.segment.SegmentReader.getStats(SegmentReader.java:485)
      2. org.apache.nutch.segment.SegmentReader.list(SegmentReader.java:441)
      3. org.apache.nutch.segment.SegmentReader.main(SegmentReader.java:597)
      3 frames
    6. 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:601)
      4 frames
    7. Hadoop
      RunJar.main
      1. org.apache.hadoop.util.RunJar.main(RunJar.java:156)
      1 frame