Comment 11 for bug 504291

We currently have this in the code base:
            try:
                assert store._connection._state != STATE_DISCONNECTED, (
                    "Bug #504291: Store left in a disconnected state.")
            except AssertionError:
                # The Store is in a disconnected state. This should
                # not happen, as store.rollback() should have been called
                # by now. Log an OOPS so we know about this. This
                # is Bug #504291 happening.
                getUtility(IErrorReportingUtility).raising(
                    sys.exc_info(), request)
                # Repair things so the server can remain operational.
                store.rollback()

in endRequest: the code path that leads to disconnected stores is still live. This bug is merely worked-around. I'm going to reopen it as we're trying to get a real fix in place as part of the fastdowntime work.