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From "Runping Qi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2978) JobHistory log format for COUNTER is ambigurous
Date Tue, 18 Mar 2008 22:10:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580129#action_12580129

Runping Qi commented on HADOOP-2978:

I have a off-line test that can parse the modified JobHistory log. 
The patch itself is just one char change, but it is not trivial to create a unit test for
testing the JobHistory log. Plus, post 0.17, we will use the new serialized format for job
history objects, thus it will be a thrown away work.

> JobHistory log format for COUNTER is ambigurous 
> ------------------------------------------------
>                 Key: HADOOP-2978
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2978
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.16.0
>            Reporter: Runping Qi
>            Assignee: Runping Qi
>             Fix For: 0.16.2
>         Attachments: patch.2978.txt
> For the lines like: 
> Job JOBID="job_200803072233_0001" FINISH_TIME="1204929332820" JOB_STATUS="SUCCESS" FINISHED_MAPS="24"
map tasks=24,Job Counters .Launched reduce tasks=15Map-Reduce Framework.Map input records=2894276,Map-Reduce
Framework.Map output records=2894276,Map-Reduce Framework.Map input bytes=3227015845,Map-Reduce
Framework.Map output bytes=3232268034,Map-Reduce Framework.Combine input records=0,Map-Reduce
Framework.Combine output records=0,Map-Reduce Framework.Reduce input groups=2526981,Map-Reduce
Framework.Reduce input records=2894276,Map-Reduce Framework.Reduce output records=2894276"
> The extracted value for COUNTERS is 
> Job Counters .Launched map tasks
> which is clearly wrong.

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