040000 tree 0ea564b52a61f9b033ac072a984cd996d473cb9c	caching
040000 tree 51795725ab530a1de7165b04d6dc155824442170	compare
040000 tree ab0df3d4d268049011dbe83159f8d14ebe6bbfea	hadoop
040000 tree d2f9179217884a544660d1ff6ef0ce52224e2159	platforms
040000 tree baf74d6390608bc1e637972583e681a63af10cca	spark