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https://issues.apache.org/jira/browse/HADOOP-5394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amar Kamat updated HADOOP-5394:
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Attachment: HADOOP-5394-v1.9.1.patch
Attaching a patch that fixes the testcase failures.
> JobTracker might schedule 2 attempts of the same task with the same attempt
> id across restarts
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-5394
> URL: https://issues.apache.org/jira/browse/HADOOP-5394
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Priority: Critical
> Attachments: HADOOP-5394-v1.2.patch, HADOOP-5394-v1.5.patch,
> HADOOP-5394-v1.9.1.patch, HADOOP-5394-v1.9.1.patch
>
>
> This can happen when the jobtracker gets restarted more than once. In such
> cases, the jobtracker depends on the jobhistory file for the next restart
> count. If the new restart-count is not flushed to the file then there is a
> fair chance that upon next restart, the jobtracker might schedule a new
> attempt with an existing id. This can cause problems not only with the
> side-effect files but also can cause the jobtracker to be in an inconsistent
> state.
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