Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What is table in hbase?

202

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

203

Which type of data HBase can store?

152

How to delete the table with the HBase shell?

139

What services run after running hbase job?

166

What is the use of truncate command?

183

Explain MemStore?

173

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

166

Which command do we use to run HBase Shell?

195

Define compaction in HBase?

164

Difference between hbase and rdbms?

172

What do you understand by compaction?

158

Does HBase support SQL like syntax?

151

What is the use of tools command?

190

Which command do we use to show the version?

160

Un-Answered Questions { Big Data }

How do you define "block" in HDFS?

860

What are the different Eval functions available in Pig?

527

Mention how hadoop is different from other data processing tools?

383

Explain how do ‘map’ and ‘reduce’ works?

702

what is Bloom Filter is used for in Cassandra?

109

Explain Spark Streaming with Socket?

305

Is client the end user in HDFS?

952

What is cassandra used for?

Write a query to insert a new column(new_col int) into a hiev table (htab) at a position before an existing column (x_col)

762

What do you mean by Schema Resolution?

If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

What is jmx? And how is it useful in cassandra?

What are the most commonly defined input formats in Hadoop?

1025

Does spark need yarn?

235

What do you mean by Schema Declaration?

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