[jira] [Created] (ACCUMULO-2449) user's can't specify VFS_CLASSLOADER_CACHE_DIR with system variables like the default

["John Vines (JIRA)" <ji...@apache.org>]

John Vines created ACCUMULO-2449:
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             Summary: 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 ($java.io.tmpdor/accumulo-cfs-cache-${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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