Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop Interview Questions

Questions Answers Views Company eMail

What are durable writes?

What are the parameters used to create keyspace in cassandra?

What are the key differences between cassandra and traditional rdbms?

Explain the term commitlog?

What is graph db? Explain with an example.

What are the features of apache cassandra?

How does gossip protocol help in failure detection?

What are the different elements of row in cassandra?

What are the different database elements of cassandra?

Explain nodetool utility.

What is document store db?

Explain the different types of repairs.

What do you mean by snitch?

How does gossip protocol work?

What is column store db? Explain with an example.

Un-Answered Questions { Hadoop }

Explain map-only job?

529

What are the components of Hive architecture?

1114

What is shuffling in mapreduce?

613

Explain the run-time architecture of Spark?

296

What is the default extension of the files produced from a sqoop import using the –compress parameter?

Mention what job does the conf class do?

425

name few other popular column oriented databases like hbase.

203

What is flatmap in apache spark?

327

Does the hdfs client decide the input split or namenode?

680

How do you do a file system check in hdfs?

What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

600

what is the default replication factor in HDFS?

1021

What is the purpose of sqoop-merge?

What can be optimum value for Reducer?

953

Explain the format of an apache kafka message?

491

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