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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?

 48

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

 43

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

 49

How to remove safemode of namenode forcefully in HDFS?

 42

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

 55

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

 62

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

 49

Explain HDFS “Write once Read many” pattern?

 42

Why is block size set to 128 MB in HDFS?

 54

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

 41

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

 62

How one can format Hadoop HDFS?

 55

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

 49

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

 44

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

 53

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

What is HDFS?

46

What is Hadoop HDFS – Hadoop Distributed File System?

50

List the various HDFS daemons in HDFS cluster?

43

How can one copy a file into HDFS with a different block size to that of existing block size configuration?

54

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

47

Mention what is the best way to copy files between hdfs clusters?

79

Which classes are used by the hive to read and write hdfs files?

78

How does hdfs provides good throughput?

60

Explain hdfs?

64

What are file permissions in HDFS and how HDFS check permissions for files or directory?

40

What is secondary namenode?

64

What do you mean by the high availability of a namenode? How is it achieved?

47

How to split single hdfs block into partitions rdd?

52

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

62

What is the throughput? How does hdfs give great throughput?

66

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