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 do you understand by an inner bag and outer bag in Pig?

853

Explain different execution modes available in Pig?

781

How do users interact with HDFS in Apache Pig ?

755

what are the basic parameters of a Mapper?

813

What is a MapReduce Combiner?

795

Where is Mapper output stored?

854

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

769

Is it possible to split 100 lines of input as a single split in MapReduce?

964

What is the fundamental difference between a MapReduce Split and a HDFS block?scale data processing?

885

Is it possible to rename the output file?

791

how JobTracker schedules a task ?

850

what is NameNode in Hadoop?

878

what does the conf.setMapper Class do ?

815

how is data partitioned before it is sent to the reducer if no custom partitioner is defined in Hadoop?

784

What is SequenceFileInputFormat?

823

Un-Answered Questions { Hadoop }

Explain first() operation in Spark?

348

What are Prerequisites to learn Avro?

For using hadoop list the network requirements?

471

What happens to existing data in my cluster when I add new nodes?

230

What are clusters in cassandra?

What is difference between spark and hadoop?

258

In Hive, how can you enable buckets?

740

Can impala be used for complex event processing?

169

How is Spark not quite the same as MapReduce? Is Spark quicker than MapReduce?

604

What do you understand by sstabl in cassandra?

what is JobTracker in Hadoop? What are the actions followed by Hadoop?

769

What are the types of transformation in RDD in Apache Spark?

322

What are the different components of a Hive query processor?

1423

What is the Job interface in MapReduce framework?

909

What are nodes and ephemeral nodes?

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