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?

663

What main configuration parameters are specified in mapreduce?

686

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?

697

What are the important differences between apache and hadoop?

713

Is there any point of learning mapreduce, then?

655

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?

313

Un-Answered Questions { Hadoop }

What square measure the options of apache mahout?

What is apache spark used for?

312

What is coarsegrainedexecutorbackend?

294

How does hdfs ensure information integrity of data blocks squares kept in hdfs?

Is kafka part of hadoop?

513

Explain what is a difference between an input split and hdfs block?

How many instances of a jobtracker run on hadoop cluster?

646

Can you explain spark streaming?

307

What is a dataset? What are its advantages over dataframe and rdd?

297

Can you explain textinformat?

503

Give the name of some components of Cassandra?

Explain a common use case for Flume?

What can skew the mean?

282

How do you write your own SerDe?

776

Can you define pagerank?

288

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