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

How data or file is written into Hadoop HDFS?

 40

In HDFS, how Name node determines which data node to write on?

 56

What is Secondary NameNode in Hadoop HDFS?

 69

How to restart NameNode or all the daemons in Hadoop HDFS?

 59

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

 38

Can multiple clients write into a Hadoop HDFS file concurrently?

 51

On what basis name node distribute blocks across the data nodes in HDFS?

 49

Why is Reading done in parallel and writing is not in HDFS?

 48

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

 70

How to create Users in hadoop HDFS?

 80

How to transfer data from Hive to HDFS?

 41

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

 35

What is Hadoop Distributed File System- HDFS?

 42

What is throughput in HDFS?

 60

How to split single hdfs block into partitions rdd?

 46

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

How data or a file is written into hdfs?

52

What do you mean by meta data in hdfs? List the files associated with metadata.

32

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

46

How HDFS client divide the file into the block while storing inside HDFS?

64

How to access HDFS?

47

In HDFS, how Name node determines which data node to write on?

56

Can we have different replication factor of the existing files in hdfs?

56

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

149

How much Metadata will be created on NameNode in Hadoop?

54

Explain the difference between nas and hdfs?

38

What is active and passive NameNode in HDFS?

228

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

33

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

74

How are file systems checked in hdfs?

25

What is the command for archiving a group of files in hdfs.

37

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