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

What is Distributed Cache?

853

what is difference between pig and sql?

2561

What problem does Apache Pig solve?

749

if you run Hive as a server?

871

What problems have you faced when you are working on Hadoop code?

925

What is HDFS - Hadoop Distributed File System?

914

Are multiline comments supported in Hive?

3238

How does MapReduce framework view its input internally?

829

What is the stable version of Hive ?

2589

What are the most commonly defined input formats in Hadoop?

1019

What does /var/hadoop/pids do?

1213

What is the use of Combiner?

929

What is Hive ?

959

what is SPF?

1466

what are Task Tracker and Job Tracker?

996

Un-Answered Questions { Hadoop }

What will happen in case you have not issued the command?

715

Explain transformation and action in RDD in Apache Spark?

279

I want to see the present working directory in UNIX from hive. Is it possible to run this command from hive?

624

What is a cell in hbase?

169

What is the difference between a hadoop database and relational database?

421

Explain the term commitlog?

Where is Mapper output stored?

805

What are the barriers?

Name three features of using Apache Spark

270

How is dag created in spark?

268

how will you implement SQL in Spark?

357

How to transfer data from Hive to HDFS?

What are the different file permissions in the HDFS for files or directory levels?

140

What are the machine learning algorithms supports in apache mahout?

115

How do I clear my spark cache?

255

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