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

What is the difference between Hbase and Hive?

710

What are different Hive commands available for hive and beeline CLI?

728

What is the prerequisite for Apache Hive installation?

723

RLIKE in Hive?

795

What is the difference between External and Internal Table in Hive?

736

Which companies are mostly using Hive ?

789

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

688

What is the default maximum dynamic partition that can be created by a mapper reducer? How can you change it?

727

The partition of hive table has been modified to point to a new directory location. Do I have to move the data to the new location or the data will be moved automatically to the new location?

1005

What is Partition table in Hive?

734

What are the default read and write classes in Hive?

660

Hive new version supported Hadoop Versions ?

608

Is multiline comment supported in Hive Script ?

695

What is Implicit Type conversion in Hive?

807

explaine wal in hbase?

173

Un-Answered Questions { Hadoop }

Define a column family?

What is the use of checkpoints in spark?

322

Can we run spark on windows?

281

How one can format Hadoop HDFS?

What is the difference between nas (network attached storage) and hdfs?

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

1112

How to specify more than one directory as input to the MapReduce Job?

699

Define fold() operation in Apache Spark?

308

Name the languages which are supported by apache spark and which one is most popular?

279

Define "Action" in Spark

289

What is the difference between Hadoop and RDBMS?

637

How namenode handles data node failures?

529

Explain the role of the offset?

540

What is the difference between sort by and order by in hive?

683

What does connector api in kafka?

517

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