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

Some of the most notable applications of Kafka?

521

Explain how message is consumed by consumer in Kafka?

520

What are Guarantees provided by Kafka?

529

Explain Apache Kafka Use Cases?

554

State one best feature of Kafka?

525

what is the benefits of Apache Kafka over the traditional technique?

1 1087

Is it possible to get the message offset after producing?

598

what is the maximum size of the message does Kafka server can receive?

547

What is the role of Connector API?

564

Compare Traditional queuing systems vs Apache Kafka?

541

how you can get exactly once messaging from Kafka during data production?

561

What are the types of System tools?

658

Why Should we use Apache Kafka Cluster?

598

Mention what happens if the preferred replica is not in the ISR?

573

Explain the term 'Topic Replication Factor'?

539

Un-Answered Questions { Hadoop }

How can we see all the hosts that are available in Ambari?

What do you mean by “data centre” in cassandra?

What are the additional benefits YARN brings in to Hadoop?

974

What apache spark is used for?

255

What is column store db? Explain with an example.

What is apache spark good for?

288

Define ttl in hbase?

164

If you run a select * query in hive, why does it not run mapreduce?

756

What is flatmap?

316

What is Hadoop HDFS – Hadoop Distributed File System?

What is a Cluster, Node and Key space in Cassandra ?

199

What are the main configuration parameters in a MapReduce program?

644

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

1113

Explain the flatMap operation on Apache Spark RDD?

318

What are spark stages?

304

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