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Hadoop Interview Questions
Questions Answers Views Company eMail

How Hive distributes the rows into buckets?

808

Why is Hive not suitable for OLTP systems?

770

Why do we perform partitioning in Hive?

759

Wherever (Different Directory) I run the hive query, it creates new metastore_db, please explain the reason for it?

753

What is the difference between local and remote metastore?

1121

What are different modes of metastore deployment in Hive?

709

Mention what are the type of database does Hive support ?

697

What is LazyOutputFormat in MapReduce?

695

What is Output Format in MapReduce?

703

Explain the features of Apache Spark because of which it is superior to Apache MapReduce?

626

What are the identity mapper and reducer in MapReduce?

793

How to optimize Hadoop MapReduce Job?

647

How to specify more than one directory as input in the Hadoop MapReduce Program?

726

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

655

Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

621


Un-Answered Questions { Hadoop }

Mention what is HiveServer2 (HS2)?

800


Does Apache Flume provide support for third party plug-ins?

95


What do you mean by ss table?

90


How are sparks created?

295


Give the command to see the indexes on a table?

932


What is hbase in hadoop?

659


What is vectorized query execution?

317


what daemons run on a master node and slave nodes?

707


What is apache mahout?

45


Does Hoe Spark handle monitoring and logging in Standalone mode?

277


While installing, why does apache have three config files - srm.conf, access.conf and httpd.conf?

579


What are znodes?

1


What are 'slaves' and 'masters' in Hadoop?

434


What do you know about Partition in Kafka?

664


Explain bloom?

618