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?

170

Explain what is hbase?

158

hbase support syntax structure like sql. Yes or no?

204

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

220

Define the term thrift

136

Explain what does hbase consists of?

167

Why to use hbase?

165

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

174

Explain totuple function?

629

Explain avrostorage function?

666

How do you handle compression in pig?

600

How do you organize the pig latin statements?

631

Explain tobag function?

589

How do you run the pig scripts in local mode?

553

What is flatten in pig?

663

Un-Answered Questions { Hadoop }

What are the different ways of representing data in Spark?

285

Explain Zookeeper Leader election?

How does the Pig platform handle relational systems data?

580

What do you know about transformations in spark?

300

What is the use of ycsb?

179

What is RDD lineage graph? How does it enable fault-tolerance in Spark?

325

What does FOREACH do?

610

What does dag stand for?

308

When to use –target-dir and when to use –warehouse-dir while importing data?

What are impala built-in functions?

What is Fault Tolerance?

566

What is the process for starting a Kafka server?

638

What is a MapFile?

780

Can you explain textinformat?

538

What webdav is in hadoop?

471

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