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

What is the problem in having lots of small files in hdfs?

 56

Why rack awareness algorithm is used in hadoop?

 51

Can you change the block size of hdfs files?

 61

Explain about the indexing process in hdfs?

 79

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

 80

Replication causes data redundancy then why is pursued in hdfs?

 54

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?

 47

If a particular file is 50 mb, will the hdfs block still consume 64 mb as the default size?

 48

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

 78

Explain hdfs?

 64

Explain the key features of hdfs?

 40

How does hdfs get a good throughput?

 69

Explain how indexing is done in hdfs?

 51

Explain the difference between mapreduce engine and hdfs cluster?

 144

Explain the difference between an hdfs block and input split?

 67

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

What are the key features of HDFS?

46

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

72

Why do we need hdfs?

60

How to split single hdfs block into partitions rdd?

52

What is Block in HDFS?

60

What do you mean by meta information in hdfs?

40

What should be the HDFS Block size to get maximum performance from Hadoop cluster?

41

How one can change Replication factor when Data is already stored in HDFS

49

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

80

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

59

What do you mean by metadata in HDFS? Where is it stored in Hadoop?

98

How does hdfs provides good throughput?

60

Explain the difference between mapreduce engine and hdfs cluster?

144

Why does hive not store metadata information in hdfs?

41

How to Delete directory and files recursively from HDFS?

94

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