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

On which all platform can Apache Spark run?

282

What do we mean by Paraquet?

462

Explain various cluster manager in Apache Spark?

405

What is the difference between DAG and Lineage?

1648

What are the file formats supported by spark?

315

List some use cases where Spark outperforms Hadoop in processing.

307

Explain the use of File system API in Apache Spark

308

How can you minimize data transfers when working with Spark?

359

Explain about the common workflow of a Spark program?

351

What do you understand by receivers in Spark Streaming ?

338

By Default, how many partitions are created in RDD in Apache Spark?

325

What are broadcast variables in Apache Spark? Why do we need them?

333

Is it necessary to start Hadoop to run any Apache Spark Application ?

300

What is write ahead log(journaling)?

321

Does Apache Spark provide checkpoints?

306

Un-Answered Questions { Hadoop }

Explain schemardd?

370

What is HBaseFsck class?

265

What is the difference between DAG and Lineage?

1648

What is the difference between Input Split and an HDFS Block?

Mention if we can name view same as the name of a Hive table?

726

How can we create a hadoop cluster from scratch?

469

what are the main components of cassandra data model?

What is Data Log in Kafka?

862

Is bigger than spark driver maxresultsize?

313

How does gossip protocol work?

Explain count_star?

612

Can you explain spark sql?

332

Why do we need a password-less ssh in fully distributed environment?

760

What is the usage of "cqlsh-version" command?

158

What is output format in hadoop?

734

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