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

Big Data Interview Questions

Questions Answers Views Company eMail

How hive can improve performance with orc format tables?

712

How to change the column data type in hive? Explain rlike in hive.

699

What are the uses of explode hive?

718

how can we access the sub directories recursively?

792

How do we write our own custom serde?

706

Explain the functionality of object-inspector.

719

Differentiate between hive and hbase?

761

Explain process to access sub directories recursively in hive queries.

896

Mention the date data type in hive. Name the hive data type collection.

689

What is the local repository and where it is useful while using ambari environment?

Explain repository in apache ambari?

Explain the functionalities of the nagios in ambari?

Can ambari manage multiple clusters and why?

What is the latest version of ambari that is available in the present market?

In ambari what are the different life cycle commands?

Un-Answered Questions { Big Data }

What are the various advantages of DataFrame over RDD in Apache Spark?

307

How is 0xdata's h2o different from apache mahout ?

How to write MapReduce Programs?

712

What happens if the quantity of the reducer is 0 in mapreduce?

593

Name some Primitive types of Data types, Avro Supports?

What is the difference between traditional RDBMS and Hadoop?

1170

What is Resilient Distributed Dataset (RDD) in Apache Spark? How does it make spark operator rich?

281

Explain write ahead log(journaling) in spark?

266

How is security achieved in Hadoop?

523

Explain HCatInputFormat?

How does apache spark work?

297

What is replication factor?

431

What is streaming access?

495

Explain nodetool utility.

How to restart NameNode or all the daemons in Hadoop?

542

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