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 relationship between Job and Task in Hadoop?

662

What combiners is and when you should use a combiner in a MapReduce Job?

624

How to set mappers and reducers for Hadoop jobs?

613

What are the data components used by Hadoop?

738

What is the best way to copy files between HDFS clusters?

668

Is it possible to search for files using wildcards?

642

In Hadoop what is InputSplit?

630

What is partitioning in MapReduce?

717

What is the definition of Hive?

732

What is the current version of Hive?

766

Explain about ACID transactions in Hive?

732

Is it possible to change the default location of Managed Tables in Hive, if so how?

719

Is it possible to add 100 more nodes when we already have 100 nodes in Hive?

1264

What is the default database provided by Apache Hive for metastore?

647

What is Buckets in Hive?

745

Un-Answered Questions { Hadoop }

When can you use ALTER KEYSPACE?

What is Spark MLlib?

408

What is scala and spark?

271

How to change a column data type in Hive?

689

How to access HDFS?

Explain Spark join() operation?

286

Do I need to install hadoop for spark?

272

What are the main components of Cassandra data models?

115

Explain HCatInputFormat?

Explain how HDFS communicates with Linux native file system?

Describe the distnct(),union(),intersection() and substract() transformation in Apache Spark RDD?

303

What do you mean by replication factor?

What is Pig Statistics? What are all stats classes in the Java API package available?

575

Difference between order by and sort by in Hive?

727

What are the tools that are needed to build ambari?

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