// do the splitting round
                    ChunkManagerPtr cm = confOut->getChunkManagerIfExists( finalColLong );
                    for ( map<BSONObj, int>::iterator it = chunkSizes.begin() ; it != chunkSizes.end() ; ++it ) {
                        BSONObj key = it->first;
                        int size = it->second;
                        verify( size < 0x7fffffff );

                        // key reported should be the chunk's minimum
                        ChunkPtr c =  cm->findIntersectingChunk(key);
                        if ( !c ) {
                            warning() << "Mongod reported " << size << " bytes inserted for key " << key << " but can't find chunk" << endl;
                        } else {
                            c->splitIfShould( size );
                        }
                    }