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?

790

How Hive organize the data?

774

Mention what are views in Hive?

733

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

861

How can you delete the DBPROPERTY in Hive?

673

How do you check if a particular partition exists?

730

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

804

Explain the Differences between Hive and Spark SQL?

757

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

736

Explain Clustering in Hive?

753

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

743

What are collection data types in Hive?

773

Can hive queries be executed from script files? How?

697

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

745

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

848

Un-Answered Questions { Hadoop }

What is transformation in spark?

341

What is the need for custom serde?

765

How often do you need to reformat the namenode?

552

What is difference between spark and hadoop?

272

What does the file hadoop-metrics.properties do?

530

CONCAT function in Hive with Example?

865

What is hector?

What is SparkSession in Apache Spark?

305

Define the Use of Pig?

593

What are the core apis in kafka?

641

Explain about the core components of Flume?

What is a mapreduce algorithm?

703

Explain the RDD properties?

331

What do you mean by the NameNode High Availability in hadoop?

530

Is ambari python client can be used to make good use of ambari api’s?

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