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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?

 35

What is the difference between MapReduce engine and HDFS cluster?

 94

Explain NameNode and DataNode in HDFS?

 43

How data or file is read in HDFS?

 36

How is indexing done in HDFS?

 43

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

 31

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

 97

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

 31

What are the key features of HDFS?

 36

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

 26

Explain how HDFS communicates with Linux native file system?

 36

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?

 34

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

 46

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 Fault Tolerance in Hadoop HDFS?

37

What is throughput? How does HDFS provide good throughput?

30

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

46

Explain what is difference between an input split and hdfs block?

69

What does heartbeat in hdfs means?

30

Explain the process that overwrites the replication factors in HDFS?

51

Why do we need hdfs?

50

Explain how indexing is done in hdfs?

39

Can you change the block size of hdfs files?

42

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

48

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

33

How to Delete directory and files recursively from HDFS?

89

What is a job tracker?

36

What is Secondary NameNode in Hadoop HDFS?

66

What are problems with small files and hdfs?

36

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