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 is memtable?

106

Tell something about the query language used in Cassandra Database?

Define Mem-table in Cassandra?

176

What are the management tools in Cassandra?

What is cqlsh?

What are the different composite keys in Cassandra?

Name different elements of JConsole?

What is difference between Column and Super Column?

Give the name of some components of Cassandra?

Explain the two types of compactions in Cassandra.

135

What is Cassandra Database Software ?

166

Explain Usage of Hive?

693

How can client interact with Hive?

701

How do you write your own SerDe?

767

What is the significance of ‘IF EXISTS” clause while dropping a table?

715

Un-Answered Questions { Hadoop }

What is the use of recordreader in hadoop?

421

Explain the core benefits for hadoop users by using the apache ambari?

What is the use of MasterServer?

174

Is a log flume a roller coaster?

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1328

What is SSTable?

What are the downsides of Spark?

354

What is InputFormat in Hadoop MapReduce?

670

Name the types of tunable consistency?

Why hive does not store metadata information in hdfs?

939

What are the consistency levels for read operations in Cassandra?

What is hive metastore?

710

What are the majorly used commands in sqoop?

What is the bag?

533

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

433

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