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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?

 31

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

 88

What are problems with small files and hdfs?

 28

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?

 23

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.

 22

What does heartbeat in hdfs means?

 20

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 }

What do you mean by the high availability of a namenode? How is it achieved?

25

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

42

List the various HDFS daemons in HDFS cluster?

29

What do you mean by meta information in hdfs?

24

How to split single hdfs block into partitions rdd?

38




Since the data is replicated thrice in hdfs, does it mean that any calculation done on one node will also be replicated on the other two?

28

What is the difference between input split and hdfs block?

77

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

28

What does heartbeat in hdfs means?

20

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

66

Explain what is heartbeat in hdfs?

29

Data node block size in HDFS, why 64MB?

42

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

32

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

63

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

22

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