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?

826

What is inputsplit in hadoop? Explain.

837

What platform and java version are required to run hadoop?

729

What is the functionality of jobtracker in hadoop?

767

What are the hadoop's three configuration files?

740

What is map/reduce job in hadoop?

673

What is the difference between input split and hdfs block?

106

Mention some important features of spm in cassandra?

114

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.

132

Explain cassandra.

Where cassandra stores its data?

What do you mean by cassandra-cqlsh?

Un-Answered Questions { Hadoop }

Does Cassandra works on Windows?

How to call impala built-in functions?

How ordering in hdfs is finished?

471

What is a IdentityMapper and IdentityReducer in MapReduce ?

994

What does impala do for fast access?

What is Client API?

287

What is the purpose of Hive Driver?

1090

What is hadoop technology?

317

Give me the examples of Columnar database ?

623

Why does one remove or add nodes in a Hadoop cluster frequently?

732

What is yarn in hadoop?

713

Is hadoop mandatory for spark?

295

Does spark run mapreduce?

316

How do I download and install spark?

319

What are the common faults of the developer while using Apache Spark?

304

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