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

Why Avro?

Explain Thrift & Protocol Buffers Vs. Avro?

Explain the Avro SASL Profile?

How to use Avro?

Name some Complex types of Data types, Avro Supports?

What do you mean by Schema Resolution?

Explain Avro Schemas?

What Avro offers?

Explain some Advantages of Avro?

120

Explain some Disadvantages of Avro?

What are best features of Apache Avro?

State some key Points about Apache Avro?

Who are Intended Audience to learn Avro?

What are Prerequisites to learn Avro?

Name some Primitive types of Data types, Avro Supports?

Un-Answered Questions { Hadoop }

What is the difference between hadoop and spark?

271

Mention when you can use alter keyspace?

What is the problem with the small file in Hadoop?

649

Since the data is replicated thrice in hdfs, does it mean that any calculation done on one node will also be replicated on the other two?

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

771

What do you understand by standalone (or local) mode?

428

How do we create rdds in spark?

558

How can you remove the elements with a key present in any other RDD?

297

What is bag data type in Pig?

678

What is Hadoop serialization?

697

What are the steps to submit a Hadoop job?

906

What are the different Data Types available in Hive?

699

What is a "Spark Driver"?

338

Explain JobConf in MapReduce.

809

Explain what is logging in Cassandra?

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