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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

762

Mention what are the data components used by Hadoop?

659

Main Components of Hadoop?

769

Mention what is the number of default partitioner in Hadoop?

694

Explain the fundamental difference between Cassandra and Hadoop?

224

Are Cassandra, Hadoop, Hbase and Cassandra are the same in nature? Specify.

86

Why is block size large in Hadoop?

56

How much Metadata will be created on NameNode in Hadoop?

54

What do you mean by metadata in Hadoop?

40

Difference Between Hadoop and HDFS?

63

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

64

Why we need impala hadoop?

43

How do I configure hadoop high availability (ha) for impala?

51

State some impala hadoop benefits?

44

What is the work of Export in Hadoop sqoop?

5




Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1456


What are the modules that constitute the Apache Hadoop 2.0 framework?

1006


What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

907


What are the core components of Apache Hadoop?

784


What is the difference between Apache Hadoop and RDBMS?

807


How is security achieved in Apache Hadoop?

909


What is Apache Hadoop?

852


What is a “Distributed Cache” in Apache Hadoop?

777


What is the problem with small files in Apache Hadoop?

783


What is Rack Awareness in Apache Hadoop?

811


Explain Erasure Coding in Apache Hadoop?

751


What is Disk Balancer in Apache Hadoop?

889


What is a speculative execution in Apache Hadoop MapReduce?

793


What are the modes in which Apache Hadoop run?

800


What is Safemode in Apache Hadoop?

735