rocksdb::Status LookupData( const rocksdb::Slice &aKey, std::string *aValue )
 {
   rocksdb::Status rs = mDataDBHndl->Get( mPDSrdopts, aKey, aValue );
   return rs;
 }
 rocksdb::Status GetPDS( const rocksdb::Slice &aKey, std::string *aValue )
 {
   return mPDSDBHndl->Get( mPDSrdopts, aKey, aValue );
 }