[MAPREDUCE-5309] 2.0.4 JobHistoryParser can't parse certain failed job history files generated by 2.0.3 history server

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.4-alpha
• Fix Version/s: 2.5.0
• Component/s: jobhistoryserver, mrv2
• Target Version/s: 2.5.0
• Hadoop Flags: Reviewed
• Assignee: Rushabh Shah
• Reporter: Vrushali C
• Created: 07/Jun/13 17:44
• Updated: 03/Sep/14 20:33
• Resolved: 20/May/14 15:52

Description

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.

Issue Links

• relates to: MAPREDUCE-4693 Historyserver should provide counters for failed tasks