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Posted to common-dev@hadoop.apache.org by "Amar Kamat (JIRA)" <ji...@apache.org> on 2008/09/16 17:00:45 UTC

[jira] Commented: (HADOOP-4190) Changes to JobHistory makes it backward incompatible

    [ 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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