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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

Explain Spark Driver?

334

Is there any API available for implementing graphs in Spark?

308

Please enumerate the various components of the Spark Ecosystem.

395

What is the role of Spark Driver in spark applications?

320

Name three companies which is used Spark Streaming services

326

Explain the default level of parallelism in Apache Spark

314

Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

310

Can You Use Apache Spark To Analyze and Access Data Stored In Cassandra Databases?

304

What is Spark SQL?

307

Can you explain how to minimize data transfers while working with Spark?

539

What are the ways to launch Apache Spark over YARN?

283

is it necessary to install Spark on all nodes while running Spark application on Yarn?

303

What is a worker node in Apache Spark?

301

What is worker node in Apache Spark cluster?

300

What is action, how it process data in apache spark

335

Un-Answered Questions { Hadoop }

How many types of ambari repositories are available?

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

665

What do you understand by data center in cassandra?

What will happen in case you have not issued the command?

763

What are ‘maps’ and ‘reduces’?

699

What is kerberos secured cluster in apache pig?

707

What are the other components of Cassandra?

What happens to zk sessions while the cluster is down?

How to exit the vi editor?

738

What is gossip protocol in Cassandra?

I have a relation r. How can I get the top 10 tuples from the relation r?

570

What do you mean by logging in cassandra?

Specify Cassandra’s importance on Facebook?

153

Clarify how ordering in hdfs is finished?

497

What are Flume core components?

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