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

How does data transfer happen from hdfs to hive?

155

What is non-dfs used in hdfs web console

75

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

162

How to use hdfs put command for data transfer from flume to hdfs?

66

What are tools available to send the streaming data to hdfs?

45

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

43

Compare hbase vs hdfs?

44

Which classes are used by the hive to read and write hdfs files?

78

Is the hdfs block size reduced to achieve faster query results?

46

Why does hive not store metadata information in hdfs?

41

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

52

What is a task tracker?

54

Explain the difference between nas and hdfs?

42

What is a job tracker?

44

What is the difference betwaeen mapreduce engine and hdfs cluster?

49


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

Will various customers write into an hdfs record simultaneously?

51


How to access HDFS?

56


Can multiple clients write into an HDFS file concurrently?

74


How to Delete directory and files recursively from HDFS?

94


What does heartbeat in hdfs means?

36


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

82


How to perform the inter-cluster data copying work in HDFS?

50


How to read file in HDFS?

56


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


What is throughput in HDFS?

68


What do you mean by metadata in HDFS?

61


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

43


Differentiate HDFS & HBase?

52


How data or file is written into Hadoop HDFS?

48


Explain the difference between an hdfs block and input split?

67