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?

366

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?

307

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

342

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

391

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 kind of data warehouse application is suitable for Hive? What are the types of tables in Hive?

769

What are the components used in Hive query processor?

909

How will you make changes to the default configuration files?

1015

What does consumer api in kafka?

550

In how many ways RDDs can be created? Explain.

313

How can Spark be connected to Apache Mesos?

342

What are mapreduce new and old apis while writing map reduce program?. Explain how it works

721

Is apache spark a programming language?

324

How does pipe operation writes the result to standard output in Apache Spark?

374

How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?

730

Define Apache Pig?

683

What are common uses of Apache Spark?

311

How are sparks created?

309

State one best feature of Kafka?

564

Is it necessary to know java to learn hadoop?

708

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