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 gossip protocol in Cassandra?

How Cassandra provide High availability feature?

What is NoSQL database?

104

When to use Cassandra?

130

Is there an update statement?

162

Does cloudera offer a vm for demonstrating impala?

How do I try impala out?

How does impala compare to hive and pig?

How does impala achieve its performance improvements?

Can I use impala to query data already loaded into hive and hbase?

What happens when the data set exceeds available memory?

How much memory is required?

Are results returned as they become available, or all at once when a query completes?

Why do I have to use refresh and invalidate metadata, what do they do?

Why does my select statement fail?

Un-Answered Questions { Big Data }

Explain parquet file?

305

How Hive organize the data?

774

What are the advantages of DataFrame?

324

What does rack awareness mean?

462

What is Apache Pig?

869

Explain what does the conf.setMapper Class do in MapReduce?

711

What is high availability in hadoop?

717

Can we have multiple entries in the master files?

743

what do you mean by data processing?

541

What is pig latin statements?

552

What are the different components of a Hive architecture?

874

How to show up details in pig ?

633

Name types of Cluster Managers in Spark.

329

What is SparkSession in Apache Spark?

307

What do you mean by data center in Cassandra?

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