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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?

 48

Is namenode also a commodity?

 41

How do you do a file system check in hdfs?

 37

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

 96

What are problems with small files and hdfs?

 36

Can you explain heartbeat in hdfs?

 40

Can you define a block and block scanner in hdfs?

 47

Can you explain about the indexing process in hdfs?

 36

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

 56

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

 29

What do you mean by block scanner in hdfs?

 36

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

 28

What does heartbeat in hdfs means?

 30

What does hdfs mean?

 39

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

 43

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

Explain the hdfs architecture and list the various hdfs daemons in hdfs cluster?

47

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

36

What is secondary namenode? Is it a substitute or back up node for the namenode?

52

What is a task tracker?

41

What is throughput in HDFS?

60

Can you explain heartbeat in hdfs?

40

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

37

How to Delete directory and files recursively from HDFS?

89

What is the difference between NAS and HDFS?

75

While processing data from hdfs, does it execute code near data?

38

Explain HDFS “Write once Read many” pattern?

30

Explain how indexing in hdfs is done?

30

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

29

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

24

How does HDFS Index Data blocks? Explain.

29

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