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?

738

When to use Hive?

765

Explain what is Hive?

770

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

880

What happened after creating a table in hive ?

774

What is a generic udf in hive?

775

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

967

What is the need for custom serde?

765

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

735

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

783

what is ODBC and JDBC connectivity in Hive?

727

How to load data into table created in hive ?

745

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

731

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

729

What are the 2 types of table in hive?

726

Un-Answered Questions { Hadoop }

Explain the concept of bloom filter?

Apache Spark is a good fit for which type of machine learning techniques?

298

What exactly kafka does?

528

What is pig properties?

594

Define partitions in apache spark.

2194

RLIKE in Hive?

840

Which directory does hadoop install to?

525

What are common uses of Apache Spark?

311

What is worker node in Apache Spark cluster?

314

Specify what the information segments utilized by hadoop are?

473

Explain how HCatalog enables right tool for right Job?

What is Apache Hive?

877

What is the use of flume in hadoop?

State some DDL Command with brief Description?

Explain tomap function?

631

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