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

Big Data Interview Questions

Questions Answers Views Company eMail

Map reduce jobs take too long. What can be done to improve the performance of the cluster?

697

Map reduce jobs are failing on a cluster that was just restarted. They worked before restart. What could be wrong?

602

Is apache spark going to replace hadoop?

354

What are the advantage of spark?

292

What is the disadvantage of spark sql?

369

When to use spark sql?

311

What are the great features of spark sql?

286

Can you explain apache spark?

322

What is apache presto?

Describe REVERSE function in Hive with example?

706

How to Alter Hive Database?

743

When application is on high latency (high response time)?

789

CONCAT function in Hive with Example?

812

Is it possible to create multiple table in hive for same data?

691

UPPER or UCASE function in Hive with example?

802

Un-Answered Questions { Big Data }

How to write a custom partitioner for a Hadoop MapReduce job?

653

Difference between HBase vs Hive?

727

Define role of velocity in big data?

618

What is a hive on spark?

295

what is Bloom Filter is used for in Cassandra?

115

Why is spark popular?

280

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

701

What happens to job tracker when namenode is down?

673

What is an accumulator in spark?

300

What are the key differences between cassandra and traditional rdbms?

explain apache hbase?

149

Write a query to insert a new column(new_col int) into a hiev table (htab) at a position before an existing column (x_col)

788

What are the four basic parameters of a mapper?

567

What do you mean by meta information in hdfs? List the documents related to metadata.

What do you mean by Schema Resolution?

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