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 your favourite tool in the hadoop ecosystem?

641

What is the function of NodeManager?

663

Difference between SQL and HiveQL ?

1 2959

what is pig?

543

What are the steps involved in MapReduce framework?

609

explain Metadata in Namenode?

599

What is a 'block' in HDFS?

685

What is Derby database?

631

How many Daemon processes run on a Hadoop system?

833

What are the limitations of importing RDBMS tables into Hcatalog directly?

673

How the Client communicates with HDFS?

716

What is NoSQL?

645

What is Row Key?

651

What is a Task instance in Hadoop? Where does it run?1

617

What does the overwrite keyword denote in Hive load statement?

1 1926

Un-Answered Questions { Hadoop }

What do you know about yarn?

236

How does spark rdd work?

195

What is sample Query in Hive?

420

What is difference between split and block in hadoop?

1084

What is scala spark?

185

Is spark built on top of hadoop?

219

How do I stop flume agent?

Describe REVERSE function in Hive with example?

421

Should we use RAID in Hadoop or not?

701

How spark is used in hadoop?

194

When would you use hbase?

142

Explain the maximum size of a message that can be received by the Kafka?

486

What are the most common OutputFormat in Hadoop?

303

How to fetch particular columns in pig?

350

What are the downsides of Spark?

210

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