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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What are the different CQL data definition commands in Cassandra?

Describe DataStaxOpsCenter?

174

How Cassandra stores data?

What is the usage of "void close()" method?

What are the Advantages of using Cassandra ?

Define Cluster?

107

How does Cassandra delete data?

How many types of NoSQL databases? Give some examples.

187

Define replication factor?

What is session in Cassandra?

161

What do you understand by Data Replication in Cassandra?

What is the usage of "cqlsh-version" command?

148

What is the use of paging cqlsh command in Cassandra?

What was the design goal of Cassandra?

Define replication strategy?

Un-Answered Questions { Hadoop }

On which all platform can Apache Spark run?

269

Illustrate some demerits of using Spark.

320

What is the function of NodeManager?

916

What are Prerequisites to learn Avro?

Who created spark?

293

What is Spark SQL?

308

How Cassandra stores data?

Differentiate between drop and truncate in cqlsh

Explain how does hbase actually delete a row?

166

Why we need impala hadoop?

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

How Pig programming gets converted into MapReduce jobs?

624

What is spark pipeline?

291

What is bag?

683

Name the two types of shared variable available in Apache Spark?

305

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