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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

Why HDFS performs replication, although it results in data redundancy in Hadoop?

 36

Can multiple clients write into a Hadoop HDFS file concurrently?

 47

Can multiple clients write into an HDFS file concurrently in hadoop?

 68

How to create Users in hadoop HDFS?

 71

Why HDFS stores data using commodity hardware despite the higher chance of failures in hadoop?

 32

What is Hadoop Distributed File System- HDFS?

 40

How is hadoop related to the big data? Describe its components?

 455

Connection between hadoop and big data?

 499

What is the difference between cassandra, hadoop big data, mongodb, couchdb?

 497

State benefits of Hadoop users by using Apache Ambari?

 65

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

 738

How to optimize Hadoop MapReduce Job?

 600

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

 668

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

 611

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

 579



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1417

What are the modules that constitute the Apache Hadoop 2.0 framework?

961

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

850

What are the core components of Apache Hadoop?

718

What is the difference between Apache Hadoop and RDBMS?

743

How is security achieved in Apache Hadoop?

836

What is Apache Hadoop?

800

What is a “Distributed Cache” in Apache Hadoop?

725

What is the problem with small files in Apache Hadoop?

729

What is Rack Awareness in Apache Hadoop?

749

Explain Erasure Coding in Apache Hadoop?

693

What is Disk Balancer in Apache Hadoop?

802

What is a speculative execution in Apache Hadoop MapReduce?

739

What are the modes in which Apache Hadoop run?

747

What is Safemode in Apache Hadoop?

684