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From "Brian Loss (JIRA)" <>
Subject [jira] [Created] (ACCUMULO-3024) VFS classloader can randomly fail
Date Mon, 28 Jul 2014 13:24:41 GMT
Brian Loss created ACCUMULO-3024:

             Summary: VFS classloader can randomly fail
                 Key: ACCUMULO-3024
             Project: Accumulo
          Issue Type: Bug
    Affects Versions: 1.6.0, 1.5.1, 1.5.0
            Reporter: Brian Loss
            Priority: Blocker

The fix for ACCUMULO-1321 appears to have broken the VFS classloader.  The problem is that
when a UniqueFileReplicator is cleaned up, it deletes the temp directory that is holding all
of the files in the classpath.

The situation we have seen is as follows:
1. Configuration includes a general VFS classpath and 2 context VFS classpaths.
2. At tserver startup, multiple VFS objects are created.
3. Finalize is called on one of them and that deletes the process-specific temp dir (which
is shared by all of the objects).
4. I attempted to set a table.classpath.context on a table, and got errors from UniqueFileReplicator
since it couldn't create a copy of the VFS files since its temp directory had already been
cleaned up.

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