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?

162

Explain what is hbase?

153

hbase support syntax structure like sql. Yes or no?

200

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

218

Define the term thrift

134

Explain what does hbase consists of?

159

Why to use hbase?

154

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

168

Explain totuple function?

603

Explain avrostorage function?

629

How do you handle compression in pig?

561

How do you organize the pig latin statements?

579

Explain tobag function?

558

How do you run the pig scripts in local mode?

526

What is flatten in pig?

620

Un-Answered Questions { Hadoop }

Differentiate HDFS & HBase?

What is used to store data generally?

Describe REVERSE function in Hive with example?

706

File permissions in HDFS?

What is the difference between Apache Pig and Hive?

608

How can we create RDD in Apache Spark?

301

Is client the end user in HDFS?

978

Where sorting is done in Hadoop MapReduce Job?

650

Define Cassandra?

Can a spark cause a fire?

328

What is flume interceptor?

What is the primary purpose of sqoop in the hadoop architecture?

What are file permissions in HDFS? how does HDFS check permissions for files/directory?

Does Hive support record level Insert, delete or update?

685

Explain Reliability and Failure Handling in Apache Flume?

106

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