Hadoop interview questions part 27
Hadoop interview questions part 27
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Total Questions: 20
1. HCatalog supports the same data types as :
Correct Answer is : Hive
2. A ________ serves as the master and there is only one NameNode per cluster.
Correct Answer is : NameNode
3. Point out the correct statement :
Correct Answer is : DataNode is the slave/worker node and holds the user data in the form of Data Blocks
4. HDFS works in a __________ fashion.
Correct Answer is : master-worker
5. ________ NameNode is used when the Primary NameNode goes down.
Correct Answer is : Secondary
6. Point out the wrong statement :
Correct Answer is : DataNode is aware of the files to which the blocks stored on it belong to
7. Which of the following scenario may not be a good fit for HDFS ?
Correct Answer is : HDFS is not suitable for scenarios requiring multiple/simultaneous writes to the same file
8. The need for data replication can arise in various scenarios like :
Correct Answer is : All of the mentioned
9. ________ is the slave/worker node and holds the user data in the form of Data Blocks.
Correct Answer is : DataNode
10. HDFS provides a command line interface called __________ used to interact with HDFS.
Correct Answer is : “FS Shell”
11. HDFS is implemented in _____________ programming language.
Correct Answer is : Java
12. Which of the following command sets the value of a particular configuration variable (key) ?
Correct Answer is : set =
13. Point out the correct statement :
Correct Answer is : Hive Commands are non-SQL statement such as setting a property or adding a resource
14. Which of the following operator executes a shell command from the Hive shell ?
Correct Answer is : !
15. Which of the following will remove the resource(s) from the distributed cache ?
Correct Answer is : all of the mentioned
16. Point out the wrong statement :
Correct Answer is : bfs executes a dfs command from the Hive shell
17. _________ is a shell utility which can be used to run Hive queries in either interactive or batch mode.
Correct Answer is : $HIVE_HOME/bin/hive
18. Which of the following is a command line option ?
Correct Answer is : -d,–define
19. A ________ node acts as the Slave and is responsible for executing a Task assigned to it by the JobTracker.
Correct Answer is : TaskTracker
20. Point out the correct statement :
Correct Answer is : MapReduce tries to place the data and the compute as close as possible
