在mapreduce任务中，下列哪一项会由hadoop系统自动排序（）
A: keys of mapper's output
B: values of mapper's output
C: keys of reducer's output
D: values of reducer's output
A: keys of mapper's output
B: values of mapper's output
C: keys of reducer's output
D: values of reducer's output
举一反三
- 题目：利用递归函数调用方式，将所输入的5个字符，以相反顺序打印出来。def output(s,l): if l == 0: return print (s[l-1]) output(______)s = input('Input a string:')l = len(s)output(s,l) A: l-1,s B: s,l+1 C: s,l D: s,l-1
- What would be the output of the followin...printf(‘%s’, value);
- 在MapReduce中，下面哪个会将输入键值对处理成中间键值对（ ） A: Mapper B: Reducer C: Mapper和Reducer
- 在MapReduce中，下面哪个会将输入键值对处理成中间键值对（ ）。 A: Mapper和Reducer B: Mapper C: MRAppMaster D: Reducer
- It’s reported that by the end of this year the output of oil in the area ____________ by about 10%.