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 the function of consistency cqlsh command in Cassandra?

What is Cassandra-CQL collection?

What is CQLSH in Cassandra?

100

What are the benefits/ advantages of Cassandra?

Explain when to use explode in Hive?

733

Why do we need buckets?

770

What is the difference between Internal Table and External Table in Hive?

764

what are the different modes of Hive?

744

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

825

Explain how can you change a column data type in Hive?

744

When should we use SORT BY instead of ORDER BY?

748

Mention how can you stop a partition form being queried?

1158

Mention if we can name view same as the name of a Hive table?

726

What are Features of Hive?

763

Difference between HBase vs Hive?

777

Un-Answered Questions { Hadoop }

Are pig scripts support distributed file systems?

583

In which language ambari shell is developed?

What types of costs are associated in creating index on hive tables?

883

What are broker configs?

572

Define SSTable?

Define HRegionServer in HBase

161

What is active and passive NameNode in HDFS?

234

What are the abstractions of Apache Spark?

317

What apache spark is used for?

264

What is the communication channel between client and namenode/datanode?

1771

What are the components used in Hive query processor?

909

Does spark run mapreduce?

316

What happens in a textinputformat?

715

How to Delete directory from HDFS?

How can one check whether NameNode is working or not?

586

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