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

What is a bloom filter?

156

Explain what is hbase?

146

hbase support syntax structure like sql. Yes or no?

190

What happens if you alter the block size of a column family on an already occupied database?

214

Define the term thrift

132

Explain what does hbase consists of?

153

Why to use hbase?

150

Explain what happens if you alter the block size of a column family on an already occupied database?

165

Explain totuple function?

551

Explain avrostorage function?

572

How do you handle compression in pig?

523

How do you organize the pig latin statements?

537

Explain tobag function?

495

How do you run the pig scripts in local mode?

482

What is flatten in pig?

577

Un-Answered Questions { Hadoop }

Mention what are the values stored in the Cassandra Column?

Why HDFS stores data using commodity hardware despite the higher chance of failures?

What is the purpose of dfsadmin tool?

1196

What do you mean by cassandra-cqlsh?

Explain what does the conf.setmapper class do?

571

How to control access to data in impala?

Write a Pig UDF Example ?

721

What is inputformat in hadoop?

697

Who invented spark?

389

What is the Difference SparkSession vs SparkContext in Apache Spark?

388

Name a few companies that use Apache Spark in production?

310

What types of costs are associated with creating the index on hive tables?

973

Explain some Disadvantages of Avro?

What is the spark driver?

312

What is lineage graph in spark?

267

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