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In case the namenode crashes, for recovering the namenode metadata, we would need:
Only the namespace image
to apply editlogs on namespace image.
It is impossible to recoved the metadata
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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 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
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