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https://issues.apache.org/jira/browse/HADOOP-4190?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amar Kamat updated HADOOP-4190:
-------------------------------

    Attachment: HADOOP-4190-v6.patch

Had an off-line discussion with Devaraj. Devaraj suggested that the line 
delimiter would not change across versions. Hence later versions should also 
use '.' as the delim. Attaching a patch that incorporates these comments. 
_ant test-patch_ fails on findbugs. Didnt see any thing related to my patch. 
_ant test_ passed on my box.

> 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
>            Assignee: Amar Kamat
>            Priority: Blocker
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-4190-v3.patch, HADOOP-4190-v4.patch, 
> HADOOP-4190-v5.patch, HADOOP-4190-v6.patch
>
>
> 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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