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

Can we run unix shell commands from the hive? Give example?

792

How Hive organize the data?

774

Mention what are views in Hive?

736

What are the default record and field delimiter used for hive text files?

864

How can you delete the DBPROPERTY in Hive?

677

How do you check if a particular partition exists?

733

Can a partition be archived? What are the advantages and Disadvantages?

809

Explain the Differences between Hive and Spark SQL?

759

Can we change the data type of a column in a hive table?

739

Explain Clustering in Hive?

755

What does the “USE” command in the hive do?

743

What are collection data types in Hive?

775

Can hive queries be executed from script files? How?

697

Give examples of the SerDe classes which hive uses to Serialize and Deserialize data?

748

Is it possible to use the same metastore by multiple users, in case of the embedded hive?

852

Un-Answered Questions { Hadoop }

What is the difference between dataframe and dataset in spark?

304

What is a local repository and when will you use it?

171

How can we change the split size if our commodity hardware has less storage space?

714

What are the config properties of presto?

What are the different tools used for Ambari monitoring purpose?

What is zookeper?

how would you modify that solution to only count the number of unique words in all the documents?

1014

Is apache spark a database?

328

What is spark tool?

279

How to restrict the number of lines to be printed in pig ?

623

What is Combiner in MapReduce?

696

What happens if you get a ‘connection refused java exception’ when you type hadoop fsck /?

498

Name job control options specified by mapreduce.

758

What will be the output of cast ('XYZ' as INT)?

728

What do you mean by commit log in Cassandra?

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