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 the difference between hbase and hdfs?

178

Compare rdbms with hbase?

150

What is regionserver?

181

Define ttl in hbase?

168

In hbase what is column families?

176

What is decorating filters?

305

What is use of tools command?

200

Explain about hlog and wal in hbase.

312

Compare hbase & cassandra?

167

Define standalone mode in hbase?

147

Explain how does hbase actually delete a row?

171

What is the reason of using hbase?

194

Which command is used to run hbase shell?

178

Define the difference between hive and hbase?

172

Which one would you recommend for hbase table design approach – tall-narrow or flat wide?

335

Un-Answered Questions { Big Data }

How does Apache Spark handles accumulated Metadata?

367

What does /var/hadoop/pids do?

1331

Why is spark good?

305

What are the types of traditional method of message transfer?

630

Can you explain edge nodes in hadoop?

480

What is apache spark sql?

313

What is the use of flatmap in spark?

302

Explain first() operation in Apache Spark?

315

Does spark require hadoop?

303

What is the difference between reducebykey and groupbykey?

312

Why Ambari?

200

What is Sqoop Import Mainframe Tool and its Purpose?

Describe the distnct(),union(),intersection() and substract() transformation in Apache Spark RDD?

317

List the advantage of Parquet files?

311

What are the bookkeeper elements and concepts?

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