Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

Define column families?

171

Which code is used to open a connection in hbase?

265

What is the role of the offset.

514

What is the role of the kafka producer api.

532

Explain the main difference between kafka and flume?

611

Explain what is kafka?

535

Explain what is the role of the zookeeper?

495

What are the various components in kafka.

572

Explain the process for starting a kafka server?

524

Define partitioning key?

488

Explain what is a consumer group?

559

Explain why are replications critical in kafka?

512

Mention what is data cleansing?

438

What is a udf?

449

What is a record reader?

408

Un-Answered Questions { Big Data }

What is the reason behind Transformation being a lazy operation in Apache Spark RDD? How is it useful?

482

What is the inputsplit in map reduce software?

622

Explain sum(), max(), min() operation in Apache Spark?

301

How many numbers of reducers run in Map-Reduce Job?

610

What are the differences between hadoop 1 and hadoop 2?

434

Which filter accepts the page size as the parameter in HBase?

209

How is 0xdata's h2o different from apache mahout ?

What are shared variables?

332

How does Cassandra write?

What is hadoop, hbase, hive and cassandra? Specify similarities and differences among them.

126

Define replication factor?

What is HDFS?

Explain HCatReader?

List out some common problems faced by data analyst?

452

Why do we need rdd in spark?

286

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