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?

918

What is the function of NodeManager?

863

Difference between SQL and HiveQL ?

1 3442

what is pig?

793

What are the steps involved in MapReduce framework?

929

explain Metadata in Namenode?

858

What is a 'block' in HDFS?

925

What is Derby database?

857

How many Daemon processes run on a Hadoop system?

1056

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

896

How the Client communicates with HDFS?

1009

What is NoSQL?

872

What is Row Key?

933

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

816

What does the overwrite keyword denote in Hive load statement?

1 2428

Un-Answered Questions { Hadoop }

How analysis of Big Data is useful for organizations?

426

Use of version command in hadoop sqoop?

Why would nosql be better than using a sql database? And how much better is it?

449

What is azure spark?

281

What are the different ways you can use to secure a cluster using Ambari?

What do you understand by standalone (or local) mode?

388

How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

714

How can you native libraries be included in yarn jobs?

402

Define Compaction?

Can you explain about the indexing process in hdfs?

explain the key features of Apache Spark?

318

Is the hdfs block size reduced to achieve faster query results?

What is the significance of ‘IF EXISTS” clause while dropping a table?

648

How to debug Hadoop code?

476

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

678

For More Un-Answered { Hadoop } Questions Click Here