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

List Hadoop’s three configuration files?

424

What is Distributed Cache in Hadoop?

467

What is the relationship between Jobs and Tasks in Hadoop?

619

Who are ‘Data Scientists’?

422

Tell me some major benefits of Hadoop?

408

What is structured and unstructured data?

455

According to IBM, what are the three characteristics of Big Data?

437

Which port does SSH work on?

410

Is there another way to check whether Namenode is working?

407

What is the NameNode port number?

402

Give me an example of document database ?

484

What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?

457

What are the four modules that make up the Apache Hadoop framework?

559

How does job tracker schedule a job for the task tracker?

459

What is 'jps'?

430

Un-Answered Questions { Hadoop }

Compare hbase & cassandra?

160

What is shuffling and sorting in Hadoop MapReduce?

638

What happens to rdd when one of the nodes on which it is distributed goes down?

435

What is difference between map and flatmap in spark?

322

What is the significance of Sliding Window operation?

309

Describe SPM?

What is the purpose of RecordReader in hadoop?

483

Define the term Column Families?

What are the Difference between MongoDB and Cassandra?

How to read file in HDFS?

How to open a connection in hbase?

153

What do you understand by cql?

What is the role of Connector API?

560

Explain various level of persistence in Apache Spark?

302

What is apache spark core?

307

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