Identify the daemon that performs checkpoint operations of the namespace state in a cluster
configured with HDFS High Availability (HA) using Quorum based-storage?
A.
NodeManeger
B.
BackupNode
C.
JournalNode
D.
Standby NameNode
E.
Secondary NameNode
F.
CheckpointNode
G.
NameNode
Explanation:
Note: SecondaryNameNode: Is the worst name ever given to the module in the
history of naming conventions. It is only a check point server which actually gets a back up of the
fsimage+edits files from the namenode.
It basically serves as a checkpoint server.
But it does not come up online automatically when the namenode goes down!
Although the secondary namenode can be used to bring up the namenode in the worst case
scenario (manually) with some data loss.
The answer should be E. The SECONDARY NameNode performs checkpoint operations
0
0
I choose D
0
0
Answer: D. There’s no Secondary Name Node in Quron Based HA HDFS. Its StandBy NameNode that performs checkpointing. Journal Node only stores edits log.
0
0
najz
Answer D
0
0