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Hadoop Interview Questions
Questions Answers Views Company eMail

How to stop a partition form being queried?

 822

What ate the key components of Hive Architecture?

 569

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

 629

What is Hive query processor?

 599

Explain the need for MapReduce while programming in Apache Pig?

 546

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

 417

What are the different pig data types?

 440

Explain about the different complex data types in Pig?

 399

What is a relation in Pig?

 453

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

 501

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

 423

What is the use of having Filters in Apache Pig ?

 447

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

 390

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

 446

What are the various diagnostic operators available in Apache Pig?

 453

Un-Answered Questions { Hadoop }

What is data skew in spark?

206

Who developed Apache Avro?

40

Tunable consistency is supported by Cassandra. Explain.

55

what is meaning Replication factor?

639

What is a secondary namenode?

363




what are the main components of cassandra data model?

61

What is Rack awareness?

679

Explain the key features of Spark.

206

Can you list few commonly used hive services?

400

Is kafka a amqp?

290

What are the debugging tools used for Apache Pig scripts?

479

Explain how do you overwrite replication factor?

236

What is spark etl?

200

Can you define serde in hive?

423

How much space will the split occupy in Mapreduce?

395

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