what is in resolvedData is a dictionary that comes from LcgFileCatalogClient.getFileMetadata() and it is 

        successful[lfn] = {}
        successful[lfn]['Size'] = fstat.filesize
        successful[lfn]['CheckSumType'] = fstat.csumtype
        successful[lfn]['Checksum'] = fstat.csumvalue
        successful[lfn]['GUID'] = fstat.guid
        successful[lfn]['Status'] = fstat.status
        successful[lfn]['CreationDate'] = fromEpoch( fstat.ctime )
        successful[lfn]['ModificationDate'] = fromEpoch( fstat.mtime )
        successful[lfn]['NumberOfLinks'] = fstat.nlink
        successful[lfn]['Mode'] = S_IMODE( fstat.filemode )

So, this is not a "replicas dictionary", which is then passed to the "__checkActiveSEs" that looks in the RSS cache for "Checksum", "GUID", "NumberOfLinks" etc that obviosly are not SEs. This slows down a lot the Executors/Optimizers, since it produces many cache misses.