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https://issues.apache.org/jira/browse/HADOOP-8874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13482905#comment-13482905
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Suresh Srinivas commented on HADOOP-8874:
-----------------------------------------
While rebasing the trunk, can you please remove the tab used for indentation
(in getQualifiedBinPath method). Please also ensure that indentation used is
two spaces and lines do not extend beyond 80 chars.
> HADOOP_HOME and -Dhadoop.home (from hadoop wrapper script) are not uniformly
> handled
> ------------------------------------------------------------------------------------
>
> Key: HADOOP-8874
> URL: https://issues.apache.org/jira/browse/HADOOP-8874
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: scripts, security
> Affects Versions: 1-win
> Environment: Called from external process with -D flag vs HADOOP_HOME
> set.
> Reporter: John Gordon
> Labels: security
> Fix For: 1-win
>
> Attachments: fix_home_np.patch, HADOOP-8645.1-win.002.patch
>
>
> There is a -D flag to set hadoop.home, which is specified in the hadoop
> wrapper scripts. This is particularly useful if you want SxS execution of
> two or more versions of hadoop (e.g. rolling upgrade). However, it isn't
> honored at all. HADOOP_HOME is used in 3-4 places to find non-java hadoop
> components such as schedulers, scripts, shared libraries, or with the Windows
> changes -- binaries.
> Ideally, these should all resolve the path in a consistent manner, and
> callers shuold have a similar onus applied when trying to resolve an invalid
> path to their components. This is particularly relevant to scripts or
> binaries that may have security impact, as absolute path resolution is
> generally safer and more stable than relative path resolution.
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