MapReduce Interview Questions

MapReduce interview questions

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Total Questions: 5

1. Amazon EMR also allows you to run multiple versions concurrently, allowing you to control your ___________ version upgrade.

A. Pig

B. Windows Server

C. Hive

D. Ubuntu

Correct Answer is : Hive

2. Point out the correct statement :

A. Amazon Elastic MapReduce (Amazon EMR) provides support for Apache Hive.

B. Pig extends the SQL paradigm by including serialization formats and the ability to invoke mapper and reducer scripts

C. The Amazon Hive default input format is text

D. All of the mentioned

Correct Answer is : Amazon Elastic MapReduce (Amazon EMR) provides support for Apache Hive.

3. The Amazon EMR default input format for Hive is :.

A. org.apache.hadoop.hive.ql.io.CombineHiveInputFormat

B. org.apache.hadoop.hive.ql.iont.CombineHiveInputFormat

C. org.apache.hadoop.hive.ql.io.CombineFormat

D. All of the mentioned

Correct Answer is : org.apache.hadoop.hive.ql.io.CombineHiveInputFormat

4. Hadoop clusters running on Amazon EMR use ______ instances as virtual Linux servers for the master and slave nodes

A. EC2

B. EC3

C. EC4

D. None of the mentioned

Correct Answer is : EC2

5. Point out the wrong statement :

A. Apache Hive saves Hive log files to /tmp/{user.name}/ in a file named hive.log

B. Amazon EMR saves Hive logs to /mnt/var/log/apps/

C. In order to support concurrent versions of Hive, the version of Hive you run determines the log file name

D. None of the mentioned

Correct Answer is : None of the mentioned

MapReduce interview questions