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 is check pointing in hadoop?

474

What does secondary name-node means?

477

What type of data hadoop can handle ?

472

What does the high availability of a name-node means?

474

What does block mean?

479

What do you think about the speculative execution?

479

What did mean by data-node?

470

How to use combiner in hadoop ?

478

List few benefits of spark over map reduce?

314

Can you define rdd?

319

Do you know the comparative differences between apache spark and hadoop?

284

What do you understand about yarn?

307

Name few companies that are the uses of apache spark?

316

Name the operations supported by rdd?

345

Name the languages which are supported by apache spark and which one is most popular?

294

Un-Answered Questions { Hadoop }

Explain fullOuterJoin() operation in Apache Spark?

443

Mention the date data type in hive. Name the hive data type collection.

733

Does cloudera offer a vm for demonstrating impala?

What is the process to perform an incremental data load in Sqoop?

What is the default block size in hdfs?

1079

Can a spark cause a fire?

342

What MapReduce framework consists of?

1149

Can I set the number of reducers to zero?

428

How can Spark be connected to Apache Mesos?

342

Explain Spark Core?

325

What happens if you alter the block size of a column family on an already occupied database?

220

What is reduce side join in mapreduce?

652

What are input format, input split & record reader and what they do?

661

What is the difference between HDFS block and input split?

938

What do you mean by replication strategy?

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