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 HDFS block size and what did you chose in your project?

976

What is HDFS High Availability?

962

What are different types of filesystem?

1142

how can we change Replication Factor?

1019

What is Hive Present Version ?

1092

What is the purpose of Hive Driver?

1051

In which scenario Hive is good fit?

981

Can i access Hive Without Hadoop ?

1 2699

What is difference between internal and external tables in hive?

1 2428

When Hive is run in embedded mode

1881

Can you execute Hadoop dfs Commands from Hive CLI? How?

1166

List the various options available with the Hive command?

903

Why Mapreduce output written in local disk?

1000

What is identity mapper and reducer? In which cases can we use them?

1006

Is YARN a replacement of Hadoop MapReduce?

1 2020

Un-Answered Questions { Hadoop }

What alternate way does HDFS provides to recover data in case a Namenode

955

Describe how hbase uses zookeeper?

how can you debug Hadoop code?

839

Explain the action count() in Spark RDD?

281

Who invented spark?

410

What is a metastore in hive?

699

Does Pig support multi-line commands?

897

Which java class handles the output record encoding into files which result from Hive queries?

665

What is spooldir flume?

What is flume and sqoop?

107

How to write a Custom Key Class?

939

What are brokers in kafka?

503

What are the different life cycle commands in ambari?

Is it possible to use Kafka without ZooKeeper?

651

Why cloudera is used?

476

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