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

Mention what is the difference between apache kafka and apache storm?

593

Explain when using field grouping in storm, is there any time-out or limit to known field values?

624

Explain how you can reduce churn in isr? When does broker leave the isr?

810

Is it necessary to kill the topology while updating the running topology?

622

What is struct and explain its purpose?

573

How can we kill a topology?

594

While installing, why does apache have three config files - srm.conf, access.conf and httpd.conf?

608

what is the traditional method of message trfer?

610

What is the process of creating ambari client?

What are the three layers where the hadoop components are actually supported by ambari?

What are the other components of ambari that are important for automation and integration?

How many types of ambari repositories are available?

What bit version that ambari needs and also list out the operating systems that are compatible?

What are the core benefits for hadoop users by using apache ambari?

What is a local repository and when it is useful while using ambari environment?

Un-Answered Questions { Hadoop }

What are the advantages of DataSets?

307

Do I need to install hadoop for spark?

293

What is the usage of "cqlsh-version" command?

158

What is hinted handoff?

Explain what is a task tracker in hadoop?

502

Does 'ILLUSTRATE' run MR job?

892

How does lazy evaluation work in spark?

304

When is it suggested to use a combiner in a MapReduce job?

688

How can an application connect to Hive run as a server?

1214

How does bloom filter help in searching rows?

219

What is a namenode in hadoop?

What is Block in HDFS?

What is the job of blend () and repartition () in Map Reduce?

682

What is NoSQL database?

104

How many types of ambari repositories are available?

For More Un-Answered { Hadoop } Questions Click Here