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

When would you use hbase?

184

What are the filters are available in apache hbase?

157

How do we back up a hbase cluster?

145

What are the data manipulation commands of hbase?

203

Explain data versioning?

180

While reading data from hbase, from which three places data will be reconciled before returning the value?

200

Which command is used to show the current hbase user?

194

How does bloom filter help in searching rows?

219

Explain the data model of hbase.

178

How hbase handles the write failure?

208

Define column families?

178

Which code is used to open a connection in hbase?

267

What is the role of the offset.

553

What is the role of the kafka producer api.

581

Explain the main difference between kafka and flume?

649

Un-Answered Questions { Hadoop }

What is difference between flume and kafka?

Discuss the role of Spark driver in Spark application?

296

What is a difference between an input split and hdfs block?

Does Hive support record level Insert, delete or update?

737

Can you explain the common input formats in hadoop?

571

Doesn’t google have its very own version of dfs?

523

What is Sqoop Job?

What is a row in cassandra?

Explain first() operation in Apache Spark RDD?

402

What are channel selectors?

1086

How multi-hop agent can be setup in Flume?

110

What is bookkeeper?

explain apache hbase?

153

Should I install spark on all nodes of yarn cluster?

358

What is spark checkpointing?

302

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