040000 tree 4760b89d4a82f62d5f1aa09394a3baaf2e7b165b	hadoopfs
040000 tree 7e68856ed3f51c22f9b31be0989975033abf27a7	hbase
040000 tree da6f63f465ff0a5ad15345c09452ff2e5f6048a0	kafka
040000 tree 681e8250e21d85e12451815f32caf2f601f13630	monoid
040000 tree fc874ba2b56f1cf1c41e12e5b8b400d192843eda	serializer