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

What is hdfs block size?

 57

How hdfs is different from traditional file systems?

 49

How is hdfs block size different from traditional file system block size?

 50

How data or a file is written into hdfs?

 52

What is a namenode in hadoop?

 52

What is secondary namenode?

 54

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

 32

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

 47

Can you modify the file present in hdfs?

 87

Define data integrity?

 33

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

 37

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

 31

Define hadoop archives?

 27

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

 58

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

 37

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

Does HDFS allow a client to read a file which is already opened for writing in hadoop?

42

How data or file is read in HDFS?

38

How data or file is written into Hadoop HDFS?

40

Compare hbase vs hdfs?

38

Why is HDFS only suitable for large data sets and not the correct tool to use for many small files?

61

How to split single hdfs block into partitions rdd?

46

Explain how are file systems checked in hdfs?

46

How to Delete directory and files recursively from HDFS?

89

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

46

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

74

What does hdfs mean?

41

How does data transfer happen from hdfs to hive?

148

How data or file is read in Hadoop HDFS?

37

Explain the difference between an hdfs block and input split?

61

Can you change the block size of hdfs files?

45

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