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Apache HDFS Hadoop Distributed File System Interview Questions
Questions Answers Views Company eMail

Explain the hdfs architecture?

 47

How does hdfs provides good throughput?

 48

Can we have different replication factor of the existing files in hdfs?

 50

How will you perform the inter cluster data copying work in hdfs?

 35

Suppose there is file of size 514 mb stored in hdfs (hadoop 2.x) using default block size configuration and default replication factor. Then, how many blocks will be created in total and what will be the size of each block?

 125

List the files associated with metadata in hdfs?

 32

Define data integrity? How does hdfs ensure data integrity of data blocks stored in hdfs?

 52

What is a rack awareness algorithm and why is it used in hadoop?

 33

What is a block?

 53

What is throughput? How does hdfs provides good throughput?

 56

Replication causes data redundancy and consume a lot of space, then why is it pursued in hdfs?

 39

Define hadoop archives? What is the command for archiving a group of files in hdfs.

 35

What do you mean by the high availability of a namenode?

 29

What is the difference between nas (network attached storage) and hdfs?

 48

What is a rack awareness algorithm?

 58

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Un-Answered Questions { Apache HDFS Hadoop Distributed File System }

How data or file is read in Hadoop HDFS?

33

File permissions in HDFS?

27

What do you mean by metadata in HDFS?

53

How to split single hdfs block into partitions rdd?

44

Explain the difference between mapreduce engine and hdfs cluster?

97

Why do we need hdfs?

50

What is the difference betwaeen mapreduce engine and hdfs cluster?

37

What is the throughput?

43

What are the main properties of hdfs-site.xml file?

46

Why is block size set to 128 MB in HDFS?

39

What is a namenode in hadoop?

46

How does hdfs provides good throughput?

48

Explain the key features of hdfs?

26

Can you explain about the indexing process in hdfs?

34

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

33

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