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

Explain the rudimentary difference between Cassandra and HBase?

Is HDFS utilized in Cassandra? If yes, where?

Elaborate on Identifiers?

121

What are keywords?

Explain the fundamental difference between Cassandra and Hadoop?

224

There seem to be certain management tools in Cassandra. What are they?

122

Specify Cassandra’s importance on Facebook?

153

Tunable consistency is supported by Cassandra. Explain.

Are Cassandra, Hadoop, Hbase and Cassandra are the same in nature? Specify.

Explain the term Cluster?

105

Explain what is logging in Cassandra?

What is HDFS?

Why HDFS?

How to Delete file from HDFS?

How to keep files in HDFS?

Un-Answered Questions { Hadoop }

Is Hive useful when making data warehouse applications?

738

What is active and passive NameNode in Hadoop?

463

Describe what happens to a mapreduce job from submission to output?

665

What is a reliable and unreliable receiver in Spark?

322

What exactly kafka does?

473

What is ganglia is used for in ambari?

Why ‘Reading‘ is done in parallel and ‘Writing‘ is not in HDFS?

Why we need compression and what are the different compression format supported?

282

What is Hadoop Map Reduce ?

805

What is node?

Explain catalyst query optimizer in Apache Spark?

315

Explain Thrift & Protocol Buffers Vs. Avro?

What is Apache Spark Machine learning library?

314

Do I need scala for spark?

292

What are the Benefits Of Distributed Applications?

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