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 memtable?

108

Tell something about the query language used in Cassandra Database?

Define Mem-table in Cassandra?

184

What are the management tools in Cassandra?

What is cqlsh?

What are the different composite keys in Cassandra?

Name different elements of JConsole?

What is difference between Column and Super Column?

Give the name of some components of Cassandra?

Explain the two types of compactions in Cassandra.

137

What is Cassandra Database Software ?

166

Explain Usage of Hive?

740

How can client interact with Hive?

749

How do you write your own SerDe?

800

What is the significance of ‘IF EXISTS” clause while dropping a table?

755

Un-Answered Questions { Hadoop }

What is cluster in apache spark?

334

What is the number of default partitioner in hadoop?

473

Name the various types of lists supported by bootstrap.

724

What are the drawbacks of Pig?

652

What is log compaction?

575

What is Block in HDFS?

What is SparkContext in Apache Spark?

331

What are the features and characteristics of Apache Spark?

309

Define data centre?

118

How do you integrate spark and hive?

339

Can NameNode and DataNode be a commodity hardware?

1728

What is apache spark used for?

326

What is kafka Producer?

573

Differentiate between hive and hbase?

807

Define "Action" in Spark

316

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