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 are durable writes?

104

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.

101

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 }

Why apache spark is faster than hadoop?

405

How can we scale apache mahout in cloud?

What are the steps to submit a Hadoop job?

953

What do you understand by logging in cassandra?

Can you define rdd?

321

Why is block size set to 128 MB in Hadoop HDFS?

155

What are the scalar data types in Pig?

636

Can you define parquet file?

295

What is a scarce system resource?

709

How to read file in HDFS?

If a data Node is full how it's identified?

986

What are the libraries of spark sql?

308

What must we know to work on Zookeeper well?

Which are the three modes in which hadoop can be run?

530

What is Apache Kafka?

588

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