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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4190) Changes to JobHistory makes it backward incompatible
Date Tue, 16 Sep 2008 15:00:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12631429#action_12631429
] 

Amar Kamat commented on HADOOP-4190:
------------------------------------

Ideally there should be some kind of a version attached to JobHistory. A parser can parse
a history file only if their version matches. Thoughts?

> Changes to JobHistory makes it backward incompatible
> ----------------------------------------------------
>
>                 Key: HADOOP-4190
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4190
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Amar Kamat
>
> With HADOOP-3245, the job history format has changed. Every log line now ends with a
'.' (dot). JobHistory's parser will consider a history line valid only if it ends in a dot
> Hence the new parser wont be able to parse old history files.

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