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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 is the procedure to create users in HDFS and how to allocate Quota to them?

 39

How does a client read/write data in HDFS?

 41

What is the difference between MapReduce engine and HDFS cluster?

 100

Explain NameNode and DataNode in HDFS?

 51

How data or file is read in HDFS?

 38

How is indexing done in HDFS?

 49

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

 35

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

 132

Why ‘Reading‘ is done in parallel and ‘Writing‘ is not in HDFS?

 33

What are the key features of HDFS?

 36

How can one set space quota in Hadoop (HDFS) directory?

 28

Explain how HDFS communicates with Linux native file system?

 38

If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

 38

Replication causes data redundancy then why is is pursued in HDFS?

 49

What is a block in Hadoop HDFS? What should be the block size to get optimum performance from the Hadoop cluster?

 36

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

What is the procedure to create users in HDFS and how to allocate Quota to them?

39

What is hdfs in big data?

38

What is secondary namenode?

54

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

58

If data is present in HDFS and RF is defined, then how can we change Replication Factor?

32

How to remove safemode of namenode forcefully in HDFS?

36

What do you mean by block scanner in hdfs?

38

What is HDFS?

40

How to Delete directory from HDFS?

42

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

59

Replication causes data redundancy then why is is pursued in HDFS?

49

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

56

How does HDFS Index Data blocks? Explain.

31

Would you be able to change the block size of hdfs files?

45

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

48

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