CCA-410 · Question #96
Identify the daemon that performs checkpoint operations of the namespace state in a cluster configured with HDFS High Availability (HA) using Quorum based-storage?
The correct answer is D. Standby NameNode. 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…
Question
Identify the daemon that performs checkpoint operations of the namespace state in a cluster configured with HDFS High Availability (HA) using Quorum based-storage?
Options
- ANodeManeger
- BBackupNode
- CJournalNode
- DStandby NameNode
- ESecondary NameNode
- FCheckpointNode
- GNameNode
How the community answered
(49 responses)- A2% (1)
- B2% (1)
- C8% (4)
- D84% (41)
- F4% (2)
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.
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