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https://issues.apache.org/jira/browse/VFS-488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905361#comment-14905361
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Bernd Eckenfels commented on VFS-488:
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I think thats a problem related to OS, sftp server and a comination thereof.
What SFTP serers you are using on which OS. Is Program B accessing source or
target server, locally or via the server? Can you provide a thread dump of
program A while it hangs? (but generally speaking changes are low this can be
fixed)
> Java Program does not exit or throw an exception when a FileObject being read
> from is accessed by another process
> -----------------------------------------------------------------------------------------------------------------
>
> Key: VFS-488
> URL: https://issues.apache.org/jira/browse/VFS-488
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.0
> Environment: Development
> Reporter: Sathish Sreedharan
> Labels: Hanging
>
> Scenario:
> 1. Program A moves a large file "abc.txt" from source SFTP server to a target
> SFTP server.
> 2. While the file is being moved by Program A, Program B resolves the same
> file "abc.txt" and starts writing to it OR renames the file "abc.txt"
> Issue:
> 1. Program A that has an open input stream to abc.txt does not exit or throw
> an exception
> 2. I'm thinking Program A keeps waiting on inputstream.read() as it is a
> blocking operation
> Is this a known issue, and if it is, any work around? Or in other words, can
> Program B somehow determine that "abc.txt" is being written to by an external
> process?
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