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 do you categorize a big data?

704

What is inputsplit in hadoop? Explain.

735

What platform and java version are required to run hadoop?

642

What is the functionality of jobtracker in hadoop?

669

What are the hadoop's three configuration files?

639

What is map/reduce job in hadoop?

618

What is the difference between input split and hdfs block?

Mention some important features of spm in cassandra?

107

What is the use of cassandra cql collection?

Mention some important components of cassandra data models?

What is the role of alter keyspace?

What is hadoop, hbase, hive and cassandra? Specify similarities and differences among them.

122

Explain cassandra.

Where cassandra stores its data?

What do you mean by cassandra-cqlsh?

Un-Answered Questions { Hadoop }

what is Memtable in Cassandra?

107

As part of optimizing the queries in hive, what should be the order of table size in a join query?

673

In cloudera there is already a cluster, but if I want to form a cluster on ubuntu can we do it?

685

What are the types of tables in Hive?

688

What is the difference between spark and apache spark?

302

What is the difference between spark and python?

299

What is the Repository?

What is Hadoop Custom partitioner ?

954

Explain what you understand by speculative execution

568

Does google use hadoop?

618

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

527

Explain the run-time architecture of Spark?

278

What are the features of RDD, that makes RDD an important abstraction of Spark?

265

Can I do trforms or add new functionality?

Explain data flow in Flume?

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