Hadoop interview questions part 21
Hadoop interview questions part 21
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Total Questions: 20
1. Which of the following Hive commands is not supported by HCatalog ?
Correct Answer is : ALTER INDEX … REBUILD
2. Which of the following Hive commands is not supported by HCatalog ?
Correct Answer is : ALTER INDEX … REBUILD
3. Which hdfs command is used to check for various inconsistencies ?
Correct Answer is : fsck
4. Point out the correct statement :
Correct Answer is : All hadoop commands are invoked by the bin/hadoop script
5. HDFS supports the ____________ command to fetch Delegation Token and store it in a file on the local system.
Correct Answer is : fetchdt
6. In ___________ mode, the NameNode will interactively prompt you at the command line about possible courses of action you can take to recover your data.
Correct Answer is : recovery
7. Point out the wrong statement :
Correct Answer is : classNAME displays the class name needed to get the Hadoop jar
8. _________ command is used to copy file or directories recursively.
Correct Answer is : distcp
9. __________ mode is a Namenode state in which it does not accept changes to the name space.
Correct Answer is : Rollback
10. __________ command is used to interact and view Job Queue information in HDFS.
Correct Answer is : queue
11. Which of the following command runs the HDFS secondary namenode ?
Correct Answer is : secondarynamenode
12. Which of the following is used for the MapReduce job Tracker node ?
Correct Answer is : jobtracker
13. Which of the following is a common hadoop maintenance issue ?
Correct Answer is : Lack of configuration management
14. Point out the correct statement :
Correct Answer is : Hadoop is designed to be a highly redundant distributed system
15. ___________ mode allows you to suppress alerts for a host, service, role, or even the entire cluster.
Correct Answer is : Maintenance
16. Which of the following is a configuration management system ?
Correct Answer is : Puppet
17. Point out the wrong statement :
Correct Answer is : Putting a component into maintenance mode prevent events from being logged
18. Which of the following is a common reason to restart hadoop process ?
Correct Answer is : All of the mentioned
19. __________ Manager’s Service feature monitors dozens of service health and performance metrics about the services and role instances running on your cluster.
Correct Answer is : Cloudera
20. Which of the tab shows all the role instances that have been instantiated for this service ?
Correct Answer is : Instance
