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https://issues.apache.org/jira/browse/ACCUMULO-2449?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930269#comment-13930269
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Christopher Tubbs commented on ACCUMULO-2449:
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See
[comment|https://issues.apache.org/jira/browse/ACCUMULO-2425?focusedCommentId=13930267&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13930267]
on ACCUMULO-2425 for why the interpolation currently only works for the
default value, and not when specified.
> user's can't specify VFS_CLASSLOADER_CACHE_DIR with system variables like the
> default
> -------------------------------------------------------------------------------------
>
> Key: ACCUMULO-2449
> URL: https://issues.apache.org/jira/browse/ACCUMULO-2449
> Project: Accumulo
> Issue Type: Improvement
> Components: start
> Reporter: John Vines
> Priority: Minor
>
> via code analysis-
> VFS_CLASSLOADER_CACHE_DIR's key is defined in AccumnuloVFSClassLoader.
> However, it explicitly declares it's value in the same format as it's
> created, rather then using a String defined in AccumuloVFSClassloader as
> well. This could lead to schisming.
> But more importantly, AccumuloVFSClassloaders builds that path by extracting
> system properties to build the path. If a user declares the default value
> ({{$java.io.tmpdir/accumulo-cfs-cache-$\{user.name\}}}), it will not work as
> intended. I'm fairly certain if I put that value in my accumulo-site, it
> won't get broken down in the same way. Default values should behave the same
> way as both the default value and being declared in the site.xml
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