A Dynamic MapReduce Scheduler for Heterogeneous Workloads Chao Tian , Haojie Zhou , Yongqiang He,Li Zha. 簡報人：碩資工一甲 董耀文 . Outline. Background Question? So! Related work MapReduce procedure analysis MR-Predict Schedule policys Evaluation Conclusion. Background .
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Total order sort (sequential I/O )benchmark
8 ( 64MB + 64 MB ) / 8 >= 31.2 MB/s
use [.]* as the regular expression.
8 ( 64MB + 1MB + 1MB + SID ) / 92 >= 31.2 MB/s
It splits the input text into words, shuffles every word in map phase and counts its occupation number in reduce phase.
8 ( 64MB + 64 MB + 64MB + SID ) / 35 >= 31.2 MB/s