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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-5309) 2.0.4 JobHistoryParser can't parse certain failed job history files generated by 2.0.3 history server
Date Fri, 07 Jun 2013 17:44:21 GMT
Vrushali C created MAPREDUCE-5309:
-------------------------------------

             Summary: 2.0.4 JobHistoryParser can't parse certain failed job history files
generated by 2.0.3 history server
                 Key: MAPREDUCE-5309
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5309
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobhistoryserver
    Affects Versions: 2.0.4-alpha
            Reporter: Vrushali C



When the 2.0.4 JobHistoryParser tries to parse a job history file generated by hadoop 2.0.3,
the jobhistoryparser throws as an error as

java.lang.ClassCastException: org.apache.avro.generic.GenericData$Array cannot be cast to
org.apache.hadoop.mapreduce.jobhistory.JhCounters
    at org.apache.hadoop.mapreduce.jobhistory.TaskAttemptUnsuccessfulCompletion.put(TaskAttemptUnsuccessfulCompletion.java:58)
    at org.apache.avro.generic.GenericData.setField(GenericData.java:463)
    at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:166)
    at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:138)
    at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)
    at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:166)
    at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:138)
    at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:129)
    at org.apache.hadoop.mapreduce.jobhistory.EventReader.getNextEvent(EventReader.java:93)
    at org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.parse(JobHistoryParser.java:111)
    at org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.parse(JobHistoryParser.java:156)
    at org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.parse(JobHistoryParser.java:142)
    at com.twitter.somepackage.Test20JobHistoryParsing.testFileAvro(Test20JobHistoryParsing.java:23)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


Test code and the job history file are attached.

Test code:
package com.twitter.somepackagel;

import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser;
import org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.JobInfo;
import org.junit.Test;
import org.apache.hadoop.yarn.YarnException;

public class Test20JobHistoryParsing {
   
  @Test
  public void testFileAvro() throws IOException
  {
      Path local_path2 = new Path("/tmp/job_2_0_3-KILLED.jhist");
     JobHistoryParser parser2 = new JobHistoryParser(FileSystem.getLocal(new Configuration()),
local_path2);
     try {
       JobInfo ji2 = parser2.parse();
       System.out.println(" job info: " + ji2.getJobname() + " "
             + ji2.getFinishedMaps() + " "
             + ji2.getTotalMaps() + " "
             + ji2.getJobId() ) ;
     }
     catch (IOException e) {
        throw new YarnException("Could not load history file "
           + local_path2.getName(), e);
     }
  }
}

This seems to stem from the fix in https://issues.apache.org/jira/browse/MAPREDUCE-4693
that added counters to the historyserver  for failed tasks.

This breaks backward compatibility with JobHistoryServer. 



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