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?

106

Tell something about the query language used in Cassandra Database?

Define Mem-table in Cassandra?

176

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.

135

What is Cassandra Database Software ?

166

Explain Usage of Hive?

698

How can client interact with Hive?

705

How do you write your own SerDe?

772

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

715

Un-Answered Questions { Hadoop }

What are the different types of filaters used in hbase?

190

How will you make changes to the default configuration files?

968

What all tasks you can perform for managing host using Ambari host tab?

What are Pig Execution modes?

618

Tell me about the execution modes of Apache Pig?

538

what does the conf.setMapper Class do ?

820

What is the usage of "void close()" method?

How can native libraries be included in yarn jobs?

482

Mention some important components of cassandra data models?

What is spark execution engine?

372

Explain Dsstream with reference to Apache Spark

391

What are the disservices of utilizing Apache Spark over Hadoop MapReduce?

632

What do you mean by Thrift in Cassandra?

How are file systems checked in hdfs?

What is the use of rdd in spark?

276

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