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  1. Categories >> Software >> Big Data >> Hadoop >> Apache HDFS Hadoop Distributed File System
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Apache HDFS Hadoop Distributed File System Interview Questions
Questions Answers Views Company eMail

What are the main hdfs-site.xml properties?

 41

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

 35

How does HDFS ensure Data Integrity of data blocks stored in HDFS?

 41

How to remove safemode of namenode forcefully in HDFS?

 36

Who divides the file into Block while storing inside hdfs in hadoop?

 49

What are file permissions in HDFS? how does HDFS check permissions for files/directory?

 53

How one can change Replication factor when Data is already stored in HDFS

 44

Explain HDFS “Write once Read many” pattern?

 34

Why is block size set to 128 MB in HDFS?

 43

What should be the HDFS Block size to get maximum performance from Hadoop cluster?

 37

What is the importance of dfs.namenode.name.dir in HDFS?

 58

How one can format Hadoop HDFS?

 47

Explain what happens if, during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3?

 42

How to format the HDFS? How frequently it will be done?

 36

Which one is the master node in HDFS? Can it be commodity hardware?

 47

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

List the various HDFS daemons in HDFS cluster?

35

How does hdfs give great throughput?

38

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

35

What does hdfs mean?

41

How to read file in HDFS?

50

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

56

Can you define a block and block scanner in hdfs?

49

Explain HDFS “Write once Read many” pattern?

34

How is indexing done in Hadoop HDFS?

58

Define hadoop archives?

27

What are the key features of HDFS?

36

Define data integrity?

33

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

40

What is the difference between MapReduce engine and HDFS cluster?

100

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

53

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