Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What are the different UDF’s in Pig?

694

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

971

What are the core components of Apache Hadoop?

832

What is the difference between Apache Hadoop and RDBMS?

860

How is security achieved in Apache Hadoop?

968

What is Apache Hadoop?

905

What is a “Distributed Cache” in Apache Hadoop?

830

What is the problem with small files in Apache Hadoop?

844

What is Rack Awareness in Apache Hadoop?

865

Explain Erasure Coding in Apache Hadoop?

816

What is Disk Balancer in Apache Hadoop?

957

What is a speculative execution in Apache Hadoop MapReduce?

841

What are the modes in which Apache Hadoop run?

845

What is Safemode in Apache Hadoop?

789

What are the different methods to run Spark over Apache Hadoop?

772

Un-Answered Questions { Big Data }

Explain how cassandra writes data?

How does apache spark engine work?

332

Explain the features of stand alone (local) mode?

676

How to write MapReduce Programs?

771

What are the default record and field delimiter used for hive text files?

870

Explain the important tools useful for big data?

606

Explain bagtotuple?

635

State Disadvantages of Apache Kafka?

669

What do you mean by replication strategy?

When to use explode in Hive?

803

Agent communicate with other Agents?

What is crontab? Explain with suitable example?

1106

Explian the Limitations of HBase?

199

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

How can you send large messages with kafka (over 15mb)?

547

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