HDFS - Say, we have a file which is very important and...

HDFS - Hadoop Distributed File System

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Say, we have a file which is very important and is being used by many clients simultaneously, what replication factor should we keep?

Let us assume that there 50 datanodes available.

One
Two
Three, the usual replication factor
Four or more

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HDFS - Hadoop Distributed File System

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1 Why HDFS?

2 HDFS - HDFS stands for:...

3 HDFS - Average life of a Hard Disk Drive is:...

4 HDFS - NAS (Network Attached Storage) or SAN (Storage Area network) do...

5 HDFS - What does it mean by scaling out?...

6 HDFS - NameNode & DataNodes

7 HDFS - What is not true about HDFS?...

8 HDFS - When we create a folder which will be impacted?...

9 HDFS - The metadata is stored on...

10 HDFS - Which of the following is not a metadata of file?...

11 HDFS - Can we run the namenode and datanode on the same...

12 HDFS - What best describes namenode or datanode?...

13 HDFS - Which machine is namenode?...

14 HDFS - When we create a file in HDFS which will be...

15 HDFS - Does datanode know the name and the parent folder name...

16 HDFS - If you have two computers A (16GB, 512GB Disk) and...

17 HDFS - Design & Limitations

18 HDFS - Replication

19 HDFS - On what basis does the HDFS breaks a big file...

20 HDFS - Which of the following is not true about replication in...

21 HDFS - If there is a file of size 270 Megabytes in...

22 HDFS - Which of the following is not an advantage of having...

23 HDFS - If you have a file of size 150MB having a...

24 HDFS - We have a cluster having two racks R1 and R2....

25 HDFS - If we have five machines in our cluster out of...

26 HDFS - Say, we have a file which is very important and...

27 HDFS - Which one will consume more memory on namenode?...

28 HDFS - If we had a replication factor of two on a...

29 HDFS - If losing three nodes at a time is possible in...

30 HDFS - File Reading - Writing

31 HDFS - In HDFS, which is more efficient to store?...

32 HDFS - In HDFS, which one will take more time?...

33 HDFS - To recieve the first byte will be faster in case...

34 HDFS - The read speed of SSD is faster than HDD...

35 HDFS - HDFS provides strong consistency?...

36 HDFS - For reading the actual data, the name node reads the...

37 HDFS - Once data is written to data node, does client need...

38 HDFS - The replication happens between the datanodes?...

39 HDFS - Who splits the file into blocks?...

40 HDFS - The data is written directly to datanode?...

41 HDFS - Namenode Backup & Failover

42 HDFS - On every change in the namenode such creation of directory,...

43 HDFS - Mount tables is a service:...

44 HDFS - When do you use mount tables?...

45 HDFS - In hadoop 2.x, which of the following setups is highly...

46 HDFS - In case the namenode crashes, for recovering the namenode metadata,...

47 HDFS - In Hadoop 2.x with the standby setup, is there are...

48 HDFS - Hands-On with Console

49 HDFS - Hands-On - More Commands

50 HDFS - The home folder in linux console for a user john1234...

51 HDFS - To transfer files from your laptop to webconsole, we use...

52 HDFS - Your home folder in HDFS start with:...

53 Create Text File Using Nano

54 Copy File to HDFS

55 Set Replication Factor

56 HDFS - Summary

57 HDFS - Resources

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