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

Discuss the precautions that are needed to take care while adding a column?

What are different logging levels in cassandra?

Describe the different consistency levels for read operation in cassandra?

Give the differences between the different types of primary keys in cassandra?

What are the main benefits of using cassandra?

What do you mean by tunable consistency?

100

What do you understand by logging in cassandra?

What do you mean by ss table?

Discuss and explain the various types of partitioners in cassandra?

What do you understand by the super column in cassandra?

Elucidate the concept of cap theorem?

What is the procedure of data storage in cassandra?

What do you understand by the term snitch in cassandra? Give some example.

Is it possible to add or delete column families in a working group?

What is mapper in map reduce?

695

Un-Answered Questions { Hadoop }

What do shuffling do?

713

What is ZooKeeper Atomic Broadcast (ZAB) protocol?

What is a bag in apache pig?

571

Input Split & Record Reader and what they do?

1072

Is spark better than hadoop?

338

How does cassandra perform read operation? Explain

What is Importance of Java in Apache Kafka?

584

What are the ways to create RDDs in Apache Spark? Explain.

328

Define a combiner?

691

What is tasktracker in hadoop?

467

What are the Hadoop features extended to its eco-system components ?

481

How to use Apache Zookeeper command line interface?

1194

What is throughput in Hadoop?

573

What are the options-process for upgrading zookeeper?

How is spark different from hadoop?

308

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