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 do you understand by Filters in HBase?

147

Explain the various table design approaches in HBase?

138

What is table in hbase?

208

Which method is used to access HFile directly without using HBase?

222

Which type of data HBase can store?

159

How to delete the table with the HBase shell?

153

What services run after running hbase job?

172

What is the use of truncate command?

193

Explain MemStore?

182

What is the best practice on deciding the number of column families for HBase table?

173

Which command do we use to run HBase Shell?

199

Define compaction in HBase?

168

Difference between hbase and rdbms?

181

What do you understand by compaction?

160

Does HBase support SQL like syntax?

157

Un-Answered Questions { Hadoop }

What is CQLSH in Cassandra?

100

How to create a custom key and custom value in MapReduce Job?

725

Give key features of any NoSQL database?

106

What are broadcast variables in Apache Spark? Why do we need them?

333

How to use hdfs put command for data transfer from flume to hdfs?

What is the difference between rdd and dataframe in spark?

367

What is ColumnFamily?

Name the types of tunable consistency?

What is indexing and why do we need it?

858

What is unstructured data?

706

What is cassandra database used for?

Can we do real-time processing using spark sql?

322

Can you define sqoop in hadoop?

Have you ever used counters in hadoop?

457

Can you explain spark mllib?

301

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