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

How to write a query in Cassandra?

104

What is the significance of cluster class in Cassandra?

Explain how cassandra writes changed data into commitlog?

What is cluster in Cassandra data model?

What are the key points of data model of Cassandra?

What is Column Family in Cassandra?

100

Does cassandra support acid tractions?

Define the management tools in Cassandra?

State the differences between a node, a cluster and datacenter in Cassandra?

List the benefits of using Cassandra.

Define SSTable?

What OS Cassandra supports?

Name the management tools in Cassandra?

Is piglatin a strongly typed language? If yes, then how did you come to the conclusion?

631

What are the commonalities between pig and hive?

588

Un-Answered Questions { Hadoop }

Define streaming?

660

How does a namenode handle the failure of the data nodes?

691

Explain how cassandra writes changed data into commitlog?

What is RDD lineage graph? How does it enable fault-tolerance in Spark?

307

Clarify what is sqoop in hadoop?

419

With the help of two examples name the map and reduce function purpose

638

What is CONCATENATE command in Hive?

920

What is metadata storage service in bookkeeper?

How can you use producer api code?

523

Give examples of the SerDe classes whihc hive uses to Serializa and Deserilize data?

736

What is ZooKeeper Client?

Is spark good for machine learning?

306

What does conf.setmapper class do?

667

How does spark program work?

276

What is spark written?

333

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