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 memtable?

108

Tell something about the query language used in Cassandra Database?

Define Mem-table in Cassandra?

184

What are the management tools in Cassandra?

What is cqlsh?

What are the different composite keys in Cassandra?

Name different elements of JConsole?

What is difference between Column and Super Column?

Give the name of some components of Cassandra?

Explain the two types of compactions in Cassandra.

137

What is Cassandra Database Software ?

166

Explain Usage of Hive?

745

How can client interact with Hive?

752

How do you write your own SerDe?

805

What is the significance of ‘IF EXISTS” clause while dropping a table?

757

Un-Answered Questions { Hadoop }

Mention the difference between hbase and relational database?

172

What do you mean by column family in Cassandra?

What is the difference between hadoop and spark?

296

Can you explain smb join in hive?

776

What is in memory processing in spark?

290

Explian the Limitations of HBase?

199

What are barriers?

What are the features of RDD, that makes RDD an important abstraction of Spark?

301

What are all stats classes in the org.apache.pig.tools.pigstats package?

607

What are the file formats that Hive supports and can use be used for storage?

909

How Hive distributes the rows into buckets?

849

Why do we need hdfs?

Define the roles of the file system in any framework?

318

What is an rdd?

324

What is hbase fsck?

218

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