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https://issues.apache.org/jira/browse/HADOOP-7459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13071063#comment-13071063
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Steve Loughran commented on HADOOP-7459:
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An alternate option is to have a set of RPMs that depend on both hadoop and 
different JDKs, are marked as exclusive, and user can install them. If I 
install hadoop-core-sunjdk then I get the sun JDK and hadoop; if I install 
hadoop-core-openjdk then I get the openjdk one. And if I install neither, I get 
to sort it out myself. 

If there's one problem with this its that if they are all in the same directory 
you cant go rpm --install *.rpm, because they will be exclusive. Unless they 
aren't marked as exclusive and if you install both it picks up the Sun JDK.

> rpm shouldn't include jdk dependency check
> ------------------------------------------
>
>                 Key: HADOOP-7459
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7459
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>         Attachments: no-jdk.patch
>
>
> There are many ways to install java and the rpm shouldn't insist on one 
> method.

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