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From "Devaraj Das (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-5306) Job History file can have empty string as http port after JobTracker Restart in case of lost TT, which can result in NumberFormatException when JT is restarted 2nd time
Date Thu, 26 Feb 2009 11:15:02 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Devaraj Das resolved HADOOP-5306.
---------------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

I just committed this. Thanks, Amar!

> Job History file can have empty string as http port after JobTracker Restart in case
of lost TT, which can result in NumberFormatException when JT is restarted 2nd time
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5306
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5306
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Ravi Gummadi
>            Assignee: Amar Kamat
>            Priority: Blocker
>             Fix For: 0.20.0
>
>         Attachments: HADOOP-5306-v1.0.patch
>
>
> HTTP_PORT=""  is seen in job history file after JT recovery in case of lost TT. The .recover
file of TestJobTrackerRestartWithLostTracker has empty string as HTTP_PORT. If another time
JT is restarted and then JT tries to read the history line and tries to createTaskAttempt,
it would get NumberFormatException because of Integer.parseInt(httpPort). We somehow need
to log a legal value as HTTP_PORT in the history file OR the exception needs to be caught
and proper action is to be taken.

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