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

Can you give us some more details about ssh communication between masters and the slaves?

703

Can you tell us more about ssh?

717

What is shark?

284

Name a few commonly used spark ecosystems?

288

What is hive on spark?

391

Can we do real-time processing using spark sql?

310

How sparksql is different from hql and sql?

502

What is a parquet file?

284

How to split single hdfs block into partitions rdd?

How does data transfer happen from hdfs to hive?

148

What is non-dfs used in hdfs web console

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

149

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

What are tools available to send the streaming data to hdfs?

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

Un-Answered Questions { Hadoop }

State Disadvantages of Apache Kafka?

616

How is security achieved in Apache Hadoop?

911

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

433

Can I set the number of reducers to zero?

397

How can we create children / sub-znode?

Explain how do you overwrite replication factor?

438

What is coalesce in spark?

289

Give me an example of document database ?

476

Which data storage components are used by hadoop?

667

How is streaming implemented in spark?

1847

What is a tuple?

1201

What do you understand by mapreduce?

649

On which port does ssh work?

743

Explain the concept of cassandra data model?

114

Can you explain spark graphx?

295

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