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

Explain about Hadoop file system and processing framework?

468

How Hadoop is cost-effective?

456

What does the mapred.job.tracker command do?

476

Is it possible to rename the output file, and if so, how?

509

What are the Hadoop features extended to its eco-system components ?

489

What is job tracker in Hadoop?

548

What sorts of actions does the job tracker process perform?

476

What are the main components in Hadoop Eco-System and what are their functions ?

531

Name the most common Input Formats defined in Hadoop? Which one is default?

499

What is the block size in Hadoop?

476

Can you give some examples of Big Data?

525

After the Map phase finishes, the Hadoop framework does 'Partitioning, Shuffle and sort'. Explain what happens in this phase?

521

What is streaming in Hadoop?

470

What is a commodity hardware? Does commodity hardware include RAM?

559

What is streaming access?

542

Un-Answered Questions { Hadoop }

When creating an RDD, what goes on internally?

305

How to Delete directory and files recursively from HDFS?

Can spark be used without hadoop?

283

How do I know how many impala nodes are in my cluster?

160

Explain Zookeeper Queues?

What square measure the options of apache mahout?

What are the common types of NOSQL data bases ?

483

What do you understand by the partitions in spark?

335

What is the throughput?

What happen if the number of the reducer is 0 in MapReduce?

700

What is the difference between coalesce and repartition in spark?

333

What are the Difference between MongoDB and Cassandra?

What is map side join?

317

What are different logging levels in cassandra?

Explain about the core components of a distributed Spark application?

314

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