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040000 tree 6bd02a3494df143595872585cbcb138801c570d9	compiler
040000 tree dbee364c82e6b42f95d49800f9ba98798dd319e5	mapreduce
040000 tree 7e699ebf4d08c165f44b497cf39b738fa9d96044	memory
040000 tree aacf139f976ced40aeb0e978da72a1dfceefbf3a	persistency
040000 tree 1769503c38ba1954b30242f629737c7e674aa405	query
040000 tree 05b3bc54f053f7ea52e29f577b0cac01df1ddf5a	store
040000 tree fc6344a54c997ca906458837a52f2231cb0cbfcc	util