示例: 给出各个节点到相邻节点的距离,要求算出初始节点到各个节点的最短路径. 数据: A (B,) (D,) B (C,) (D,) C (E,) D (B,) (C,) (E,) E (A,) (C,) A节点为初始节点,A到B的距离为10,A到D的距离为5. B节点到C的距离为1,B到D的距离为2,其他类推. MapReduce计算最短路径 Map阶段 如: A (B,10) (D,5) => A 0 (B,10) (D,5) #A到A的最短距离为0 B 10 …
2016-12-21 16:53:49 mapred-default.xml mapreduce.input.fileinputformat.split.minsize 0 The minimum size chunk that map input should be split into. Note that some file formats may have minimum split sizes that take priority over this setting. 2016-12…
