转:Hadoop配置属性mapreduce.tasktracker.http.threads与mapreduce.reduce.shuffle.parallelcopies区别
看hadoop权威指南,配置调优中mapreduce.tasktracker.http.threads与mapreduce.reduce.shuffle.parallelcopies说明分别是
mapreduce.tasktracker.http.threads:每个tasktracker的工作线程数,将map数据输出到reducer
mapreduce.reduce.shuffle.pa...
转载
2018-04-23 18:32:03 ·
1707 阅读 ·
0 评论