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Hadoop Interview Questions
Questions Answers Views Company eMail

Why Avro?

 35

Explain Thrift & Protocol Buffers Vs. Avro?

 63

Explain the Avro SASL Profile?

 65

How to use Avro?

 60

Name some Complex types of Data types, Avro Supports?

 54

What do you mean by Schema Resolution?

 57

Explain Avro Schemas?

 71

What Avro offers?

 71

Explain some Advantages of Avro?

 120

Explain some Disadvantages of Avro?

 55

What are best features of Apache Avro?

 52

State some key Points about Apache Avro?

 62

Who are Intended Audience to learn Avro?

 67

What are Prerequisites to learn Avro?

 63

Name some Primitive types of Data types, Avro Supports?

 59

Un-Answered Questions { Hadoop }

Explain textFile Vs wholeTextFile in Spark?

332

What is the relationship between Hadoop, HBase, Hive and Cassandra ?

135

What are the components of presto architecture?

5

Name a few import control commands. How can Sqoop handle large objects?

5

How is transformation on rdd different from action?

276

What is a checkpoint?

817

Define the Use of MapReduce?

482

can you explain about configuration files?

75

If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?

573

What is a Speculative Execution in Hadoop MapReduce?

487

Explain the maximum size of a message that can be received by the Kafka?

592

On which hosts does impala run?

43

Which port does SSH work on?

317

What is hbase in hadoop?

508

What is yarn in hadoop?

540

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