Metacat

		// only contribute PIDs that are not already shared

		Iterator<Identifier> idIter = identifiers.iterator();

		while (idIter.hasNext()) {

			Identifier pid = idIter.next();

			if (localIdKeys.contains(pid)) {

				// we don't have this locally, so we should try to get it

				missingIdKeys.add(pid);

			}

		}

		logMetacat.warn("local pid count not yet shared: " + localIdKeys.size() + ", shared pid count: " + identifiers.size());

		//identifiers.addAll(idKeys);