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Big Data Interview Questions
Questions Answers Views Company eMail

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

614

Explain what is storage and compute nodes?

512

Explain how jobtracker schedules a task?

465

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

439

What happens in text format?

436

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

445

Explain what is a task tracker in hadoop?

452

Explain what is speculative execution?

423

Explain what happens in text format?

573

Mention what is distributed cache in hadoop?

440

Explain how can you debug hadoop code?

466

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

431

Explain what is webdav in hadoop?

508

Mention what job does the conf class do?

420

For using hadoop list the network requirements?

471


Un-Answered Questions { Big Data }

Is kafka open source?

502


What are the downsides of Spark?

354


What is the difference between a MapReduce InputSplit and HDFS block?

752


Why Do We Need Apache Pig?

641


How do you do a file system check in hdfs?

45


Mention what are the main configuration parameters that user need to specify to run mapreduce job?

731


What does ISR stand in Kafka environment?

658


Define durable writes?

69


What is the difference between Cassandra and Hadoop ?

82


What does the file hadoop-metrics.properties do?

486


Define Thrift?

268


Why do we need a password-less ssh in fully distributed environment?

709


Why spark is faster than hive?

303


Which database the sqoop metastore runs on?

5


What are the different methods to run Spark over Apache Hadoop?

718