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 are Pig Execution modes?

615

What is bag data type in Pig?

678

How to load data in pig?

607

What are the Optimizations a developer can use during joins?

528

Why should we use ‘orderby’ keyword in pig scripts?

528

What are the different math functions available in Pig?

517

What is Pig Latin?

590

Tell me about the execution modes of Apache Pig?

538

What is a tuple?

2 1187

Why should we use ‘distinct’ keyword in Pig scripts?

541

What are the different Eval functions available in Pig?

562

What are the scalar data types in Pig?

605

State the limitations of Apache Pig?

616

Why we use BloomMapFile?

601

What is a skewed join?

613

Un-Answered Questions { Hadoop }

Explain how can we check whether namenode is working or not?

570

How many ways we can create rdd?

278

Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.

650

What are the modes in which Hadoop run?

504

What is spark vcores?

280

What is the purpose of JConsole?

Mention what is the difference between apache kafka and apache storm?

553

How to set which framework would be used to run mapreduce program?

684

Explain the architecture of Hadoop Pig?

761

Can we do real-time processing using spark sql?

310

Is spark faster than hadoop?

356

How can we see only top 15 records from the student.txt out of100 records in the HDFS directory?

579

Define the Use of MapReduce?

666

Types of Data Flow in Flume?

111

Query language is executed in Cassandra database. Clarify?

140

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