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?

124

What are keywords?

Explain the fundamental difference between Cassandra and Hadoop?

228

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

126

Specify Cassandra’s importance on Facebook?

155

Tunable consistency is supported by Cassandra. Explain.

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

Explain the term Cluster?

114

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 }

Define ttl in hbase?

168

State some advantages of impala?

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

509

Why is Cassandra popular? Clarify.

What is master node in spark?

320

Which type of data HBase can store?

159

Is a distributed machine learning framework on top of spark?

352

How to set the number of reducers?

1427

Can you define the process of creating ambari client?

What is the problem with small files in Apache Hadoop?

839

Is rdd type safe?

311

How is machine learning implemented in spark?

349

What is sc textfile?

351

What is the purpose of RawComparator interface?

1175

How do you stop a running job gracefully?

654

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