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 stop a partition form being queried?

1159

What ate the key components of Hive Architecture?

856

Does Pig give any warning when there is a type mismatch or missing field?

897

What is Hive query processor?

922

Explain the need for MapReduce while programming in Apache Pig?

773

What are the relational operators available related to loading and storing in pig language?

630

What are the different pig data types?

746

Explain about the different complex data types in Pig?

655

What is a relation in Pig?

712

Explain the difference between COUNT_STAR and COUNT functions in Apache Pig?

769

How should 'store' keyword is useful in pig scripts?

642

What is the use of having Filters in Apache Pig ?

705

How to write 'foreach' statement for map datatype in pig scripts?

665

What are the basic steps to writing a UDF Function in Pig?

701

What are the various diagnostic operators available in Apache Pig?

735

Un-Answered Questions { Hadoop }

Is it possible to leverage real time analysis on the big data collected by flume directly? If yes, then explain how?

What is Cassandra Database Software ?

166

List the languages supported by Apache Spark?

313

Is it possible to search for files using wildcards?

642

Explain the functionalities of ganglia in ambari?

What is Sqoop?

Is spark secure?

283

What is pig properties?

549

Which command is used to SHOW PARTITIONS lists in HCatalog?

Explain about the execution plans of a pig script?
or
differentiate between the logical and physical plan of an apache pig script?

469

Which channel type is faster in Flume?

122

Which operating system(s) are supported for production hadoop deployment?

428

What is the use of mysql connector?

Highlight the key differences between MapReduce and Apache Pig?

707

What is the difference between sort by and order by in hive?

680

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