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?

724

What main configuration parameters are specified in mapreduce?

721

How do you stop a running job gracefully?

648

Is it necessary to write a mapreduce job in java?

669

What is shuffling and sorting in mapreduce?

691

What is the function of mapreducer partitioner?

682

What is partitioner and its usage?

750

What are the important differences between apache and hadoop?

738

Is there any point of learning mapreduce, then?

696

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

Define the term ‘sparse vector.’

295

Define the roles of the file system in any framework?

318

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

444

List commonly used machine learning algorithm?

300

Explain the filter transformation?

337

Un-Answered Questions { Hadoop }

Why do the nodes are removed and added frequently in a hadoop cluster?

504

Tell something about the query language used in Cassandra Database?

What is a “Distributed Cache” in Apache Hadoop?

822

Explain the Differences between Hive and Spark SQL?

758

Is the hdfs block size reduced to achieve faster query results?

What is a combiner and where you should use it?

721

What is mlib in apache spark?

319

What is yarn in hadoop?

716

Which are the various data sources available in spark sql?

304

What are the various input and output types supported by mapreduce?

684

Are Namenode and job tracker on the same host?

1493

What are the purposes of using Ambari shell?

What is the role of the zookeeper?

What are the complex datatypes in pig?

1020

What is the use of context object?

505

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