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

How is fault tolerance achieved in Apache Spark?

324

What are the benefits of lazy evaluation?

317

How does Apache Spark handles accumulated Metadata?

367

What is lazy evaluation in Spark?

331

What is the use of checkpoints in spark?

326

How can Spark be connected to Apache Mesos?

342

In how many ways RDDs can be created? Explain.

313

What are the advantages of DataSets?

309

What makes Apache Spark good at low-latency workloads like graph processing and machine learning?

344

Can you use Spark to access and analyse data stored in Cassandra databases?

392

Explain in brief what is the architecture of Spark?

324

What is Spark DataFrames?

296

In how many ways can we use Spark over Hadoop?

350

Explain Machine Learning library in Spark?

303

Explain about transformations and actions in the context of RDDs.

363

Un-Answered Questions { Hadoop }

What is Hive query processor?

957

What is sink in flume?

What is hdfs spark?

302

What are the restriction to the key and value class ?

470

What is sparksession and sparkcontext?

283

How client application interacts with the NameNode?

997

What is the use of cloudera?

491

Compare RabbitMQ vs Apache Kafka?

613

when hadoop enter in safe mode?

796

What do you mean by schema on reading?

767

What is flume instagram?

What is coalesce in spark sql?

329

what are views in Hive?

809

Give a list of Collection data type in Cassandra?

Explain how can you debug hadoop code?

509

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