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

What are the port numbers of job tracker?

526

Explain the key benefits of using storm for real time processing?

437

What is the logistic regression?

442

Define data cleansing?

410

What are the port numbers of namenode?

429

How can we create a hadoop cluster from scratch?

431

What are the port numbers of task tracker?

469

How can you native libraries be included in yarn jobs?

442

Name the files which are used by the startup and shutdown commands?

1 950

Define a record reader?

418

What is the job tracker role in hadoop?

432

Explain how do you overwrite replication factor?

438

Explain how can we check whether namenode is working or not?

577

Define a udf?

427

Define a sequence file in hadoop?

546

Un-Answered Questions { Hadoop }

Define the term Column Families?

List of some best tools that can be useful for data-analysis?

436

Is databricks an etl tool?

289

Can there be no Reducer?

846

Can MapReduce program be written in any language other than Java?

936

Compare Spark vs Hadoop MapReduce

332

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

439

Explain Spark join() operation?

288

Explain catalyst query optimizer in Apache Spark?

315

Is it possible to provide multiple inputs to hadoop? If yes, explain.

670

Is spark distributed computing?

298

What is scala and spark?

272

What is Hive Data Definition language?

981

Which object can be used to get the progress of a particular job

474

What are the types of cluster managers in spark?

282

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