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

As part of optimizing the queries in hive, what should be the order of table size in a join query?

697

When to use Hive?

701

Explain what is Hive?

708

What types of costs are associated in creating index on hive tables?

839

What happened after creating a table in hive ?

731

What is a generic udf in hive?

734

Does the archiving of hive tables give any space saving in hdfs?

910

What is the need for custom serde?

735

What are the three different modes in which hive can be run?

678

What is the usefulness of the distributed by clause in hive?

736

what is ODBC and JDBC connectivity in Hive?

676

How to load data into table created in hive ?

695

Is it possible to create cartesian join between 2 tables, using hive?

681

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

675

What are the 2 types of table in hive?

683

Un-Answered Questions { Hadoop }

What is the difference between spark and hive?

316

Does spark load all data in memory?

340

How does master slave architecture in the hadoop?

815

Is there an api for implementing graphs in spark?

2036

Why does the picture of Spark come into existence?

312

Can kafka be utilized without zookeeper?

514

What are the features of presto?

Compare RabbitMQ vs Apache Kafka?

567

When to use –target-dir and when to use –warehouse-dir while importing data?

What is NoSQL?

922

What does the ambari shell can be provided?

Write a Mapreduce Program for Character Count ?

1050

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

148

What is the usefulness of the distributed by clause in hive?

736

What is the difference between store and dumps commands?

670

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