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 simple strategy?

133

Why is jconsole used? What is it’s different elements?

What is jmx? And how is it useful in cassandra?

What are the different types of data model?

How does cassandra perform write operations?

Why is cqlsh used?

138

What are tokens in cassandra?

What is a column family?

Explain the terms memtable, commitlog and sstables.

What is hinted handoff?

What are the key features of any nosql database?

What is column store db?

Differentiate between drop and truncate in cqlsh

What is a yaml file in cassandra?

What is anti-entropy and how is it associated with merkel tree?

Un-Answered Questions { Hadoop }

How can you achieve high availability in Apache Spark?

451

What do you understand by Consistency in Cassandra?

What is Apache Pig?

865

What is the best way to copy files between HDFS clusters?

715

Which one is default?

525

Explain what is distributed cache in mapreduce framework?

670

Mention what are the data components used by Hadoop?

693

Explain how input and output data format of the hadoop framework?

749

what is Metastore in Hive?

721

What is difference between split and block in hadoop?

1437

How does the Pig platform handle relational systems data?

581

What is a block and block scanner in HDFS?

1064

What is a keyspace in Cassandra?

107

What is the relationship between apache hadoop, hbase, hive and cassandra?

Explain deletion in hbase?

157

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