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

How can you set an arbitrary number of Reducers to be created for a job in Hadoop?

476

Give examples of some companies that are using Hadoop structure?

441

Which modes can Hadoop be run in? List a few features for each mode?

475

How analysis of Big Data is useful for organizations?

467

What does the file hadoop-metrics.properties do?

492

Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?

461

How will you write a custom partitioner for a Hadoop job?

462

Give me the examples of Columnar database ?

591

What are 'slaves' and 'masters' in Hadoop?

433

What is Fault Tolerance?

539

What is the basic difference between traditional RDBMS and Hadoop?

449

What are the common types of NOSQL data bases ?

453

Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

439

How does speculative execution work in Hadoop?

441

What is Federation?

423

Un-Answered Questions { Hadoop }

how to share the metastore within multiple users?

934

LOWER or LCASE function in Hive with example?

713

Why does hive not store metadata information in hdfs?

Explain what is the function of mapreduce partitioner?

646

What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

1083

Can I install spark on windows?

280

Name the types of tunable consistency?

Explain how HCatalog enables right tool for right Job?

What are barriers?

Explain the uses of Map Reduce in Pig?

557

What is dataframe api?

324

Explain what is memtable in cassandra?

What is the biggest shortcoming of Spark?

319

What is the primary purpose of the pig in the hadoop architecture?

2727

What happens if there is an error in impala?

243

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