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https://issues.apache.org/jira/browse/HADOOP-11002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111080#comment-14111080
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Colin Patrick McCabe commented on HADOOP-11002:
-----------------------------------------------
The reasoning here looks sound. If spaces-in-directories don't work for
branch-2, we don't need to support them here. And the eval obviously is
problematic.
+1
> shell escapes are incompatible with previous releases
> -----------------------------------------------------
>
> Key: HADOOP-11002
> URL: https://issues.apache.org/jira/browse/HADOOP-11002
> Project: Hadoop Common
> Issue Type: Bug
> Components: scripts
> Reporter: Allen Wittenauer
> Labels: regression
> Attachments: HADOOP-11002.patch
>
>
> Post-HADOOP-9902, the following in xyz_OPTS doesn't work without being
> escaped:
> {code}
> -XX:HeapDumpPath=./java_pid_<pid>.hprof
> {code}
> This is a bit of surprising behavior to the users. The breakage is directly
> result of the code that fixes spaces in directories. Since it is much more
> likely to hit weird metacharacters in shell than have directories with
> spaces, that part of HADOOP-9902 needs to get replaced.
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