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From "Filipe Manana (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (COUCHDB-1309) File descriptor leaks on design document update and view cleanup
Date Mon, 17 Oct 2011 11:34:10 GMT
File descriptor leaks on design document update and view cleanup
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                 Key: COUCHDB-1309
                 URL: https://issues.apache.org/jira/browse/COUCHDB-1309
             Project: CouchDB
          Issue Type: Bug
            Reporter: Filipe Manana
            Assignee: Filipe Manana


If we add a design document with views defined in it, open the corresponding view group (by
querying one of its views for e.g.), then update the design document in such a way that the
view signature changes (changing a view's map function code for e.g), the old view group remains
open forever (unless a server restart happens) and keeps it's view file reference counter
active forever.
If a view cleanup request comes, the old view file is not deleted since the reference counter
is not dropped by the old view group, keeping the file descriptor in use forever.

This leakage is different from what is reported in COUCHDB-1129 but it's somehow related.

The attached patch, simply shutdowns a view group when the design document is updated and
the new view signature changes, releasing the old view file descriptor (as soon as no more
clients are using the old view).

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