Description

 A novel decentralized semantic-aware metadata technique is called smart store.  The idea of smart store is to limit the search scope of a complex metadata query to a single or a minimal number of semantically correlated groups and avoid or alleviate brute-force search in the entire system.  The smart store is used to improve the system scalability and reduce query latency for complex queries.  It is also conducive to constructing semantic-aware caching, and conventional filename-based point query.