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Deadlock in RosterItemProvider

Hi all,

I have an openfire plugin which launch cuncurrent threads to managed user roster.

A problem raised during the test, a deadlock in the SequenceManager.next() method.

The problem was fixed exchanging the order of

SequenceManager.nextID(JiveConstants.ROSTER);

and

DbConnectionManager.getConnection();

in this way:

long rosterID = SequenceManager.nextID(JiveConstants.ROSTER);

con = DbConnectionManager.getConnection();

The nextID method call the DbConnectionManager.getConnection() as well, then when there is no longer available db connection the thread block all db accesses.

Giancarlo Frison

Fixed =) (in trunk at least)