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

How the SSTable is different from other relational tables?

What is a keyspace in Cassandra?

106

What is the syntax to create keyspace in Cassandra?

126

What is the role of CQLSH?

Define data centre?

118

Define composite key?

Can we change Replication Factor on a live cluster?

What is bloom filter?

Talk about the concept of tunable consistency in Cassandra.

135

Establish the difference between a node, cluster & data centres in Cassandra.

149

Explain Tombstone in Cassandra?

List the steps in which Cassandra writes changed data into commitlog?

242

Does Cassandra support ACID transactions?

105

What is the replica placement Strategy in Cassandra ?

What are the main features of SPM in Cassandra?

Un-Answered Questions { Hadoop }

What is the difference between Cassandra and Hadoop ?

What is the Physical plan in pig architecture?

571

What is partitioning in MapReduce?

789

What does rack awareness algorithm means?

530

Does Apache Sqoop have a default database?

Which language is not supported by spark?

347

Is hadoop a memory?

739

What is the difference between HDFS block and input split?

938

How to enable trash/recycle bin in hadoop?

774

Can the region server will be located on all datanodes?

322

What are the configuration parameters in the 'MapReduce' program?

714

Which command is used to run hbase shell?

176

What is aggregatebykey spark?

291

Mention what is the next step after mapper or maptask?

695

Is kafka a message queue?

595

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