Cloudera Certified Developer for Apache Hadoop (CCDH) - CCD-410무료 덤프문제 풀어보기
On a cluster running MapReduce v1 (MRv1), a TaskTracker heartbeats into the JobTracker on your cluster, and alerts the JobTracker it has an open map task slot.
What determines how the JobTracker assigns each map task to a TaskTracker?
What determines how the JobTracker assigns each map task to a TaskTracker?
정답: C
설명: (Fast2test 회원만 볼 수 있음)
In the reducer, the MapReduce API provides you with an iterator over Writable values. What does calling the next () method return?
정답: C
설명: (Fast2test 회원만 볼 수 있음)
You use the hadoop fs -put command to write a 300 MB file using and HDFS block size of 64 MB. Just after this command has finished writing 200 MB of this file, what would another user see when trying to access this life?
정답: A
Which project gives you a distributed, Scalable, data store that allows you random, realtime read/write access to hundreds of terabytes of data?
정답: D
설명: (Fast2test 회원만 볼 수 있음)
Given a directory of files with the following structure: line number, tab character, string:
Example:
1abialkjfjkaoasdfjksdlkjhqweroij
2kadfjhuwqounahagtnbvaswslmnbfgy
3kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?
Example:
1abialkjfjkaoasdfjksdlkjhqweroij
2kadfjhuwqounahagtnbvaswslmnbfgy
3kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete the line: conf.setInputFormat (____.class) ; ?
정답: A
설명: (Fast2test 회원만 볼 수 있음)
Indentify the utility that allows you to create and run MapReduce jobs with any executable or script as the mapper and/or the reducer?
정답: E
설명: (Fast2test 회원만 볼 수 있음)