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

Explain bagtotuple?

629

How do you write comments in pig scripts?

587

What is a tuple in pig?

594

What is interactive mode in apache pig?

582

What are the execution modes in the apache pig?

544

What is the use of illustrate in pig?

560

When to use hadoop, hbase, hive and pig?

570

Explain tokenize?

617

What are pig scripts?

632

Are pig scripts support distributed file systems?

583

How do you run pig scripts on kerberos secured cluster?

581

What is the primary purpose of the pig in the hadoop architecture?

2765

What is the difference between pig and hive?

763

Explain hbasestorage function?

630

Explain hive udf function?

567

Un-Answered Questions { Hadoop }

When NameNode enter in Safe Mode?

I have a relation r. How can I get the top 10 tuples from the relation r?

620

What is mapper in map reduce?

695

Can I do transforms or add new functionality?

Explain partitions?

291

Elaborate kafka architecture?

557

Explain Spark SQL caching and uncaching?

346

What is the difference between local and remote metastore?

1141

How Sqoop can be used in a Java program?

What are Guarantees provided by Kafka?

548

is it necessary to install Spark on all nodes while running Spark application on Yarn?

331

What are ‘maps’ and ‘reduces’?

742

Why are spark transformations lazy?

308

Describe HDFS Federation?

Define replication strategy?

103

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