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Hadoop Interview Questions
Questions Answers Views Company eMail

What is the functionality of Query Processor in Apached Hive ?

720

Explain Data Type Conversion in Hive?

725

Explain SHOW and DESCRIBE Commands in Hive?

756

What are the views in Hive?

671

What are the different Primitive Data Types available in Hive?

701

Are there any problems which can only be solved by MapReduce and cannot be solved by PIG? In which kind of scenarios MR jobs will be more useful than PIG?

779

When to choose "Internal Table" in Hive?

726

What are the different parts of Hive ?

765

What are the types of tables in Hive?

742

Does Hive support record level Insert, delete or update?

695

Explain what is a Hive variable. What do we use it for?

727

Double type in Hive - Important points?

688

TRIM function in Hive with example?

728

What is different table structure available in the hive?

670

How can you add a new partition for the month December in the above partitioned table?

683


Un-Answered Questions { Hadoop }

How can you implement machine learning in Spark?

279


What do you understand by an inner bag and outer bag in Pig?

858


List out the other components of cassandra?

97


Differentiate Reducer and Combiner in Hadoop MapReduce?

687


What are configuration files in Hadoop?

526


Why does spark skip stages?

257


What is Distributed Cache in Hadoop?

467


Which language is more suitable for text analytics? R or python?

439


What does the file hadoop-metrics.properties do?

489


Hadoop uses replication to achieve fault tolerance. How is this achieved in Apache Spark?

410


Give the difference between Drop and Truncate in CQLSH?

74


How can we drop a table in HCatalog?

5


What does hdfs mean?

41


What is Apache Avro?

48


Can we change the data type of a column in a hive table?

707