Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

what are the three modes in which Hadoop can be run?

627

How data is spilt in Hadoop?

644

what is storage and compute nodes?

736

When Namenode is down what happens to job tracker?

699

what are the main configuration parameters that user need to specify to run Mapreduce Job ?

602

what is "map" and what is "reducer" in Hadoop?

633

What is Shuffling and Sorting in a MapReduce?

660

What is the difference between Hadoop and RDBMS?

632

how can you check whether Namenode is working beside using the jps command?

664

Illustrate a simple example of the working of MapReduce.

631

For a Hadoop job, how will you write a custom partitioner?

651

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

691

what is the Hadoop MapReduce APIs contract for a key and value class?

668

When is it suggested to use a combiner in a MapReduce job?

636

What is the process of changing the split size if there is limited storage space on Commodity Hardware?

708

Un-Answered Questions { Big Data }

What is the use of paging cqlsh command in Cassandra?

What are the Basics of Hadoop?

930

What is the role of the ZooKeeper in Kafka?

527

What is sparkContext?

282

Why do people use spark?

274

Can you do real-time processing with Spark SQL?

317

Why Ambari?

200

Is bigger than spark driver maxresultsize?

296

How many Mappers run for a MapReduce job in Hadoop?

611

What makes Apache Spark good at low-latency workloads like graph processing and machine learning?

328

Did edmond berger invent the spark plug?

377

What is Cassandra Data Model?

What is Catalyst framework?

292

How can client interact with Hive?

698

Explain Zookeeper Queues?

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