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

HDFS - Hadoop Distributed File System

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On every change in the Namenode such as the creation of directory, file, deletion of file etc:

Only The namespace image on disk is updated
Only, editlogs are appended to
Both 1 and 2

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HDFS - Hadoop Distributed File System

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 Ambari

49 HDFS - Hands-On with Console

50 HDFS - Hands-On - More Commands

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

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

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

54 Create Text File Using Nano

55 Copy File to HDFS

56 Set Replication Factor

57 HDFS - Summary

58 HDFS - Resources