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

Big Data Interview Questions

Questions Answers Views Company eMail

What is non-dfs used in hdfs web console

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

164

How to use hdfs put command for data transfer from flume to hdfs?

What are tools available to send the streaming data to hdfs?

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

Compare hbase vs hdfs?

Which classes are used by the hive to read and write hdfs files?

Is the hdfs block size reduced to achieve faster query results?

Why does hive not store metadata information in hdfs?

When and how to create hadoop archive?

493

What is the difference between namenode and datanode in hadoop?

544

Ideally what should be the replication factor in hadoop?

494

What is rack awareness in hadoop?

531

While starting hadoop services, datanode service is not running?

492

what happens when namenode goes down during file read operation in hadoop?

648

Un-Answered Questions { Big Data }

What is the future of apache spark?

298

Explain the wordcount implementation via hadoop framework ?

765

What is a spark rdd?

329

Where cassandra stores its data?

How you can use Akka with Spark?

376

If DataNode increases, then do we need to upgrade NameNode?

595

Why is jconsole used?

106

What are all stats classes in the org.apache.pig.tools.pigstats package?

611

Explain about the different cluster managers in Apache Spark

353

Types of Data Flow in Flume?

111

Does spark need hadoop?

303

Do streamers make money from sparks?

292

Explain what is distributed cache in mapreduce framework?

677

What is the difference between namenode and datanode in hadoop?

544

What are the hadoop configuration files at present?

532

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