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?

716

What is shark?

284

Name a few commonly used spark ecosystems?

286

What is hive on spark?

390

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 }

What is decorating filters?

301

What do you know about keyvaluetextinputformat?

601

What is the functionality of jobtracker in hadoop? How many instances of a jobtracker run on hadoop cluster?

783

What is the use of apache mahout?

State the limitations of Apache Pig?

616

Explain briefly what is Action in Apache Spark? How is final result generated using an action?

313

Do we need to install scala for spark?

311

Is hadoop a memory?

703

How can multi-hop agent be set up in Flume?

118

What is the difference between sqoop and hive?

Why Avro?

Why HDFS?

In what ways sparksession different from sparkcontext?

341

What is hdfs in big data?

What are the disadvantages of hadoop serialization?

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