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 the process to perform an incremental data load in Sqoop?

Can free form SQL queries be used with Sqoop import command?

What is the difference between an RDBMS and Hadoop?

641

How does Hadoop Classpath plays a vital role in stopping or starting in Hadoop daemons?

710

What is the data storage component used by Hadoop?

620

When is it not recommended to use MapReduce paradigm for large scale data processing?

655

What is sqoop in Hadoop ?

684

What do you understand by the term Straggler ?

686

Explain about the basic parameters of mapper and reducer function

1046

How many InputSplits is made by a Hadoop Framework?

645

What do you understand by compute and storage nodes?

681

Explain job scheduling through JobTracker

730

List the network requirements for using Hadoop ?

627

What is the next step after Mapper or MapTask?

644

What are the main components of MapReduce Job?

681

Un-Answered Questions { Hadoop }

Explain hdfs?

How rdd persist the data?

293

When to use explode in Hive?

750

What do you mean by replication strategy?

What is the difference between spark ml and spark mllib?

283

What do you understand by standalone (or local) mode?

428

What are Guarantees provided by Kafka?

523

Name different types of NoSQL database?

What platform and Java version is required to run Hadoop?

642

What is an "RDD Lineage"?

298

Can we deploy job tracker other than name node?

677

Why would nosql be better than using a sql database? And how much better is it?

484

Can you explain logistic regression?

412

Explain the use of .mecia class?

784

Is apache spark a framework?

275

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