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 Erasure Coding in Apache Hadoop?

802

What is Disk Balancer in Apache Hadoop?

951

What is a speculative execution in Apache Hadoop MapReduce?

832

What are the modes in which Apache Hadoop run?

840

What is Safemode in Apache Hadoop?

781

What are the different methods to run Spark over Apache Hadoop?

766

Why is Apache Spark faster than Apache Hadoop?

882

What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?

536

What are the configuration files in Hadoop?

581

Compare Apache Hadoop and Apache Spark?

482

What are the different modes in which we can configure/install Hadoop?

589

Explain how Hadoop cluster hardware planning and provisioning is done?

605

How to create a user in Hadoop?

540

What are the major differences between Hadoop 2 and Hadoop 3?

533

What is single node cluster in Hadoop? for what all purposes Hadoop run on a single node cluster?

579

Un-Answered Questions { Hadoop }

What is apache hcatalog?

784

What is the abstraction of Spark Streaming?

276

What is a rack awareness algorithm and why is it used in hadoop?

what are the three modes in which Hadoop can be run?

681

What is simple strategy?

133

Explain the level of parallelism in spark streaming?

300

How is machine learning implemented in spark?

349

What is the most widely recognized info formats characterized in hadoop?

485

What is a mapreduce algorithm?

710

Can we change the body of the flume event?

What is the use of exists command?

248

Define the use of Source Command in Cassandra?

What is the importance of driver in hive?

760

What do you mean by taskinstance?

798

What kinds of impala queries or data are best suited for hbase?

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