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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain deletion in hbase? Mention what are the three types of tombstone markers in hbase?

141

What are the main key structures of hbase?

167

What is the use of hbase hmaster?

149

Which technique can you use in hbase to access hfile directly without the help of hbase?

173

Explain what is wal and hlog in hbase?

312

How many operational commands in hbase?

167

why use hcolumndescriptor class?

153

What is the row key?

157

Tell me about the types of hbase operations?

175

How does hbase actually delete a row?

192

Name the filter which accepts the page size as the parameter in hbase?

184

Explain why to use hbase?

157

Mention the difference between hbase and relational database?

162

Mention what are the three types of tombstone markers in hbase?

223

Mention what are the key components of hbase?

178

Un-Answered Questions { Big Data }

Is Apache Spark a good fit for Reinforcement learning?

292

Why do we use persist () on links rdd?

295

While installing, why does apache have three config files - srm.conf, access.conf and httpd.conf?

579

What is the Difference SparkSession vs SparkContext in Apache Spark?

417

What is the purpose of Sqoop List Tables?

Replication causes data redundancy and consume a lot of space, then why is it pursued in hdfs?

Can we run unix shell commands from the hive? Give example?

750

How spark is used in hadoop?

289

Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?

663

When to choose "External Table" in Hive?

808

Explain about the different channel types in Flume.

List some use cases where Spark outperforms Hadoop in processing.

293

What is rack-aware replica placement policy?

1031

What does meta-store means in hive?

713

What is Reducer in MapReduce?

736

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