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 will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?

665

What main configuration parameters are specified in mapreduce?

687

How do you stop a running job gracefully?

615

Is it necessary to write a mapreduce job in java?

634

What is shuffling and sorting in mapreduce?

648

What is the function of mapreducer partitioner?

623

What is partitioner and its usage?

700

What are the important differences between apache and hadoop?

714

Is there any point of learning mapreduce, then?

659

While processing data from hdfs, does it execute code near data?

Define the term ‘sparse vector.’

283

Define the roles of the file system in any framework?

308

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

435

List commonly used machine learning algorithm?

292

Explain the filter transformation?

314

Un-Answered Questions { Hadoop }

What do you understand by the partitions in spark?

325

How to create a Sparse vector from a dense vector?

356

how Hadoop is different from other data processing tools?

656

How much is flume worth?

Can you list some useful zookeeper tools?

What is the command to change the replication factor ?

509

What happens if rdd partition is lost due to worker node failure?

459

How to set the number of mappers for a MapReduce job?

698

What is node?

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

470

What are the different types of nosql databases?

What is bag data type in Pig?

686

What is Spark Driver?

308

What is column store db? Explain with an example.

Give any two features of flume?

102

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