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https://issues.apache.org/jira/browse/HADOOP-7089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981610#action_12981610
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Eli Collins commented on HADOOP-7089:
-------------------------------------
Thanks for the review Allen.
According to the following Posix includes -P for cd and pwd so I think this
change will work even on systems w/o bash built ins. On my linux host both the
built-in and pwd binary support -P.
IEEE Std 1003.1, 2004 Edition
http://www.opengroup.org/onlinepubs/000095399/utilities/cd.html
http://www.opengroup.org/onlinepubs/000095399/utilities/pwd.html
> Fix link resolution logic in hadoop-config.sh
> ---------------------------------------------
>
> Key: HADOOP-7089
> URL: https://issues.apache.org/jira/browse/HADOOP-7089
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Reporter: Eli Collins
> Assignee: Eli Collins
> Priority: Minor
> Attachments: hadoop-7089-1.patch, hadoop-7089-1.patch,
> hadoop-7089-2.patch
>
>
> The link resolution logic in bin/hadoop-config.sh fails when when executed
> via a symlink, from the root directory. We can replace this logic with cd -P
> and pwd -P, which should be portable across Linux, Solaris, BSD, and OSX.
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