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Hadoop Interview Questions
Questions Answers Views Company eMail

Explain what is shuffling in mapreduce?

627

Explain what is distributed cache in mapreduce framework?

617

Mention what are the main configuration parameters that user need to specify to run mapreduce job?

731

Explain what is the function of mapreduce partitioner?

640

Explain what is heartbeat in hdfs?

35

Explain what is a difference between an input split and hdfs block?

31

Explain how indexing in hdfs is done?

38

Mention what is the best way to copy files between hdfs clusters?

73

Mention what is the difference between hdfs and nas?

67

What is a difference between an input split and hdfs block?

76

Mention what is the data storage component used by hadoop?

446

Mention what does the text input format do?

414

Mention what daemons run on a master node and slave nodes?

469

Explain what is namenode in hadoop?

438

Explain what is a sequence file in hadoop?

467


Un-Answered Questions { Hadoop }

What do you know by storage and compute node?

689


How can we see all the hosts that are available in Ambari?

59


What are the functions of "Spark Core"?

289


Different Running Modes of Apache Spark

310


What is ZooKeeper Client?

5


How is the option in Hadoop to skip the bad records?

949


What is mllib?

279


Is it possible to change the default location of a managed table?

732


What is active and passive NameNode in Hadoop?

463


What is kafka message?

500


I want to see the present working directory in UNIX from hive. Is it possible to run this command from hive?

664


Can you explain difference between apache mahout and apache spark’s mllib?

47


What is HBase Shell?

172


What are the main components of MapReduce Job?

682


Does spark use zookeeper?

275