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

What is the difference between namenode, backup node and checkpoint namenode?

 44

Is namenode also a commodity?

 33

How do you do a file system check in hdfs?

 33

What is the difference between an input split and hdfs block?

 88

What are problems with small files and hdfs?

 30

Can you explain heartbeat in hdfs?

 34

Can you define a block and block scanner in hdfs?

 37

Can you explain about the indexing process in hdfs?

 24

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

 48

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

 25

What do you mean by block scanner in hdfs?

 30

What do you mean by meta information in hdfs? List the documents related to metadata.

 24

What does heartbeat in hdfs means?

 25

What does hdfs mean?

 33

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

 39

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

Data node block size in HDFS, why 64MB?

44

What is the difference between input split and hdfs block?

77

Can you define a block and block scanner in hdfs?

37

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

25

Hdfs stores data using commodity hardware which has higher chances of failures. So, how hdfs ensures the fault tolerance capability of the system?

21

What do you mean by meta information in hdfs?

24

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

58

How to create Users in hadoop HDFS?

66

What are problems with small files and hdfs?

30

Explain the difference between an hdfs block and input split?

55

Define hadoop archives? What is the command for archiving a group of files in hdfs.

27

How does HDFS Index Data blocks? Explain.

25

Is namenode also a commodity?

33

Explain how indexing in hdfs is done?

25

What do you mean by block scanner in hdfs?

30

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