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?

529

What are the different math functions available in Pig?

518

What is Pig Latin?

592

Tell me about the execution modes of Apache Pig?

538

What is a tuple?

2 1190

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 the operation transformation and action in Apache Spark RDD?

328

How to create hadoop archive?

419

Say what the views are in hive?

672

What do you mean by shuffling and sorting in MapReduce?

699

How does Apache Spark handles accumulated Metadata?

348

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

579

What are the components of Spark Ecosystem?

303

Suppose there is file of size 514 mb stored in hdfs (hadoop 2.x) using default block size configuration and default replication factor. Then, how many blocks will be created in total and what will be the size of each block?

125

Define a metadata?

654

How does apache flume work?

132

How do ‘map’ and ‘reduce’ work?

650

What are 4 v's of big data?

294

What is Apache HBase?

267

What are the features of kafka?

542

Explain the Parquet File format in Apache Spark. When is it the best to choose this?

361

For More Un-Answered { Hadoop } Questions Click Here