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

How data or file is written into Hadoop HDFS?

 32

In HDFS, how Name node determines which data node to write on?

 46

What is Secondary NameNode in Hadoop HDFS?

 60

How to restart NameNode or all the daemons in Hadoop HDFS?

 45

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

 33

Can multiple clients write into a Hadoop HDFS file concurrently?

 41

On what basis name node distribute blocks across the data nodes in HDFS?

 39

Why is Reading done in parallel and writing is not in HDFS?

 38

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

 58

How to create Users in hadoop HDFS?

 66

How to transfer data from Hive to HDFS?

 31

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

 32

What is Hadoop Distributed File System- HDFS?

 37

What is throughput in HDFS?

 51

How to split single hdfs block into partitions rdd?

 38

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

What is the module in HDFS?

28

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

32

Does HDFS allow a client to read a file which is already opened for writing in hadoop?

36

Characterize data integrity? How does hdfs ensure information integrity of data blocks squares kept in hdfs?

37

What is throughput? How does HDFS get a good throughput?

42

What is Fault Tolerance in Hadoop HDFS?

33

Explain the key features of hdfs?

22

Explain the process that overwrites the replication factors in HDFS?

40

Can you modify the file present in hdfs?

71

How data or file is read in HDFS?

30

Can you change the block size of hdfs files?

36

What is the difference between Input Split and an HDFS Block?

63

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

22

How does hdfs give great throughput?

28

How to remove safemode of namenode forcefully in HDFS?

32

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