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

Big Data Interview Questions

Questions Answers Views Company eMail

Mention key components of Hive Architecture?

848

what Hive query processor does?

667

What does the following query do? Insert overwrite table employees partition (country, state) select ..., Se.cnty, se.st from staged_employees se;

921

While loading data into a hive table using the load data clause, how do you specify it is a hdfs file and not a local file ?

730

What is a table generating function on hive?

714

As part of optimizing the queries in hive, what should be the order of table size in a join query?

697

When to use Hive?

701

Explain what is Hive?

708

What types of costs are associated in creating index on hive tables?

838

What happened after creating a table in hive ?

729

What is a generic udf in hive?

733

Does the archiving of hive tables give any space saving in hdfs?

910

What is the need for custom serde?

732

What are the three different modes in which hive can be run?

677

What is the usefulness of the distributed by clause in hive?

734

Un-Answered Questions { Big Data }

How to invoke Command Line Interface?

Can the region server will be located on all datanodes?

316

What is the difference between Primary, Partition and Cassandra ?

Kafka can be used for which kind of applications?

503

Which files are used by the startup and shutdown commands?

720

what are the different modes of Hive?

702

What does the “USE” command in the hive do?

695

Is it possible to run Apache Spark on Apache Mesos?

289

What are advantages of Spark over MapReduce?

690

What MapReduce framework consists of?

1094

explain the concept of RDD (Resilient Distributed Dataset). Also, state how you can create RDDs in Apache Spark.

411

How would you import data from MYSQL into HDFS ?

What are the different ways of representing data in Spark?

268

Why MapReduce uses the key-value pair to process the data?

631

What are producers in kafka?

519

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