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https://issues.apache.org/jira/browse/CASSANDRA-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13229883#comment-13229883
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Jim Newsham commented on CASSANDRA-4050:
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Yeah I'm starting to think that might be true -- unfortunately. I haven't
found anything definitive, but the following postings imply a hardlink cannot
be deleted while another hardlink to the same file is locked:
http://superuser.com/questions/387136/is-it-possible-to-delete-a-hardlink-to-a-locked-file
http://superuser.com/questions/301303/one-hardlink-is-locked-how-do-i-remove-the-other
Perhaps the data structure that records the lock is in the file object and not
the hardlink object.
> cassandra unnecessarily holds file locks on snapshot files
> ----------------------------------------------------------
>
> Key: CASSANDRA-4050
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4050
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.0.8
> Environment: Windows 7
> Reporter: Jim Newsham
> Priority: Minor
>
> I'm using Cassandra 1.0.8, on Windows 7. When I take a snapshot of the
> database, I find that I am unable to delete the snapshot directory (i.e., dir
> named "{datadir}\{keyspacename}\snapshots\{snapshottag}") while Cassandra is
> running: "The action can't be completed because the folder or a file in it
> is open in another program. Close the folder or file and try again" [in
> Windows Explorer]. If I terminate Cassandra, then I can delete the directory
> with no problem.
> I expect to be able to move or delete the snapshotted files while Cassandra
> is running, as this should not affect the runtime operation of Cassandra.
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