file:Xorbas.pdf file:xiangrui.pdf file:weil-ceph-osdi06.pdf file:week10_reading2.pdf file:vldb09-938.pdf file:TR-14-2.pdf file:The Google File System.pdf file:Survey_of_real_time_processing_systems_for_big_data_Draft_.pdf file:Survey of Large-Scale Data Management Systems for Big.pdf file:Summingbird.pdf