} catch (Exception ex) {
logger.log(Level.SEVERE, "Failed to create feature collection iterator.", ex);
if (missing != null){
for( Iterator<NodeIdentifier> iterator = missing.iterator(); iterator.hasNext(); ) {
NodeIdentifier nodeid = (NodeIdentifier) iterator.next();
nodeid.writeUnLock();
}
}
if (found != null){
for( Iterator<NodeIdentifier> iterator = found.iterator(); iterator.hasNext(); ) {
NodeIdentifier nodeid = (NodeIdentifier) iterator.next();