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?

176

How Cassandra stores data?

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

What are the Advantages of using Cassandra ?

Define Cluster?

111

How does Cassandra delete data?

How many types of NoSQL databases? Give some examples.

187

Define replication factor?

102

What is session in Cassandra?

163

What do you understand by Data Replication in Cassandra?

113

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

158

What is the use of paging cqlsh command in Cassandra?

What was the design goal of Cassandra?

Define replication strategy?

103

Un-Answered Questions { Hadoop }

What are some typical functions of Job Tracker?

478

How do you organize the pig latin statements?

637

What does rdd mean?

333

Elaborate on cassandra - cql?

What do you know about transformations in spark?

304

What are the different types of Ambari repositories?

What is HBaseFsck class?

265

when you can use Alter keyspace?

124

What are the most memory-intensive operations?

What is High Availability feature in Hadoop2?

480

Why does spark skip stages?

269

How data or file is read in HDFS?

Are job tracker and task trackers present in separate machines?

506

What is coalesce in spark?

307

What are file permissions in HDFS and how HDFS check permissions for files or directory?

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