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https://issues.apache.org/jira/browse/HADOOP-961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12468860
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Hairong Kuang commented on HADOOP-961:
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Ok, I realized that the partition id is the field after [m/r] in a task id.
Although both a reduce task's ids and its output file name use the same
partition id as part of its name, the task id is generated in TaskInProgress
where NumberFormat sets the number of the mininum integer digits to be 6, while
an output file name is generated in ReduceTask where NumberFormat sets the
number of the minimum integer digits to be 5.
> a cli tool to get the event logs from a job
> -------------------------------------------
>
> Key: HADOOP-961
> URL: https://issues.apache.org/jira/browse/HADOOP-961
> Project: Hadoop
> Issue Type: New Feature
> Components: mapred
> Affects Versions: 0.10.1
> Reporter: Owen O'Malley
> Assigned To: Owen O'Malley
> Fix For: 0.11.0
>
> Attachments: event-log.patch
>
>
> Here is a little tool to list the events for a given job. The output can be
> used to find where each task ran.
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