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

How to change a column data type in Hive?

740

How Facebook Uses Hadoop, Hive and Hbase ?

766

Mention what is HiveServer2 (HS2)?

827

What are the different IDE available for Hive Development?

748

Is Hive useful when making data warehouse applications?

802

Explain REVERSE function in Hive with example?

823

What kind of datawarehouse application is suitable for Hive?

719

Explain REPEAT function in Hive with example?

844

What does the "USE" command in hive do?

843

Can you give us some examples, how Hadoop is used in real time environment?

740

What is Apache Spark?

390

explain the key features of Apache Spark?

355

How is Apache Spark better than Hadoop?

311

Explain the term paired RDD in Apache Spark?

421

How is RDD in Spark different from Distributed Storage Management?

401

Un-Answered Questions { Hadoop }

What is a namenode in hadoop?

What are durable writes?

104

Define catalog tables in HBase?

218

What do you understand by the super column in cassandra?

How we can take Hadoop out of Safe Mode?

898

What are the most memory-intensive operations?

What are the uses and applications of mahout ?

Explain countByValue() operation in Apache Spark RDD?

286

Define a metadata?

703

What do slaves consist of?

714

How do users interact with HDFS in Apache Pig ?

800

What is the role of recordreader in hadoop mapreduce?

795

What is faster than apache spark?

296

How is a keyspace created in cassandra? & What are the parameters used?

What is partitioning key?

594

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