题目内容
(请给出正确答案)
[单选题]
对文件test.txt采用MapReduce进行分析,输入文件处理阶段将文件分为10个分片,Map的中间处理数据被分为3个区,请问MapReduce处理过程中Map任务数和Reduce任务数分别为多少()
A.10 3
B.10 10
C.3 3
D.3 10
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A.10 3
B.10 10
C.3 3
D.3 10
A.D:\\Python\\Test.txt
B.D:/Python/Test.txt
C.D:\Python\Test.txt
D.D://Python//Test.txt
import java.io.*;
public class Test {
public static void main(String args[]) {
try {
String s = "ABCDE" byte b[]=s.getBytes()
FileOutputStream file =
new FileOutputStream("test.txt", true)
file.write(b) file.close() }
catch(IOException e) {
System.out.println(e.toString()) }
}
}
A、ABCABC
B、ABCDE
C、Test
D、ABCDEABCDEABCDE
A.chownXIAOLITRADE1.TXT+TRDREPORT.TXT
B.chgrpXIAOLITRADE1.TXT+TRDREPORT.TXT
C.chownxiaoliTRADE1.TXTTRDREPORT.TXT
D.chgrpxiaoliTRADE1.TXTTRDREPORT.TXT
A.环境状况公报
B.污染物排放标准
C.环境保护规划
D.环境质量标准