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

List the various components in kafka?

544

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

540

Explain about the execution plans of a pig script?
or
differentiate between the logical and physical plan of an apache pig script?

477

You have a file employee.txt in the hdfs directory with 100 records. You want to see only the first 10 records from the employee.txt file. How will you do this?

962

I have a relation r. How can I get the top 10 tuples from the relation r?

573

What is presto verifier?

What is jmx connector?

What are the presto applications?

What are the log files of the presto server?

Why should we use presto?

What is the use of mysql connector?

How can we create table by using command?

What are the various data types in presto?

What are the features of presto?

What is the default port of presto?

Un-Answered Questions { Hadoop }

Does Flume provide 100% reliability to the data flow?

137

Why do we need hive?

729

What is a TaskInstance?

673

Explain the various Transformation on Apache Spark RDD like distinct(), union(), intersection(), and subtract()?

300

Name the filter which accepts the page size as the parameter in hbase?

184

Can ambari manage multiple clusters and why?

Why is flume used?

Why is spark popular?

280

What are the uses of explode hive?

728

What are the different life cycle commands in ambari?

Can you explain how you can use Apache Spark along with Hadoop?

311

What is the disadvantage of spark sql?

369

How many layers of Hadoop components are supported by Apache Ambari and what are they?

What is the purpose of JConsole?

What are the features of spark rdd?

292

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