[ https://issues.apache.org/jira/browse/MAPREDUCE-1038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12767627#action_12767627 ] 

Aaron Kimball commented on MAPREDUCE-1038:
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Sorry about the comment-spam; JIRA responded 503 Service Unavailable so I resent the upload. If anyone has delete access, please feel free to delete duplicate comments. I'll remove the extra copies of the patch.

> Mumak's compile-aspects target weaves aspects even though there are no changes to the Mumak's sources
> -----------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1038
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1038
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 0.21.0
>            Reporter: Vinod K V
>             Fix For: 0.21.0
>
>         Attachments: MAPREDUCE-1038.patch
>
>
> This is particularly time consuming and is the bottle neck even for a simple ant build. In the case where no files have been updated in Mumak, there is no reason to recompile sources along with the aspects. compile-aspects should skip this step in these cases.

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