breaking the dependency between FSEditLog and FSImage
-----------------------------------------------------
Key: HDFS-1489
URL: https://issues.apache.org/jira/browse/HDFS-1489
Project: Hadoop HDFS
Issue Type: Improvement
Components: name-node
Affects Versions: 0.21.0
Reporter: Diego Marron
This is a refactor patch which its main concerns are:
- breaking the dependency between FSEditLog and FSImage
- Splitting the abstracting the error handling and directory management,
- Decoupling Storage from FSImage.
In order to accomplish the above goal, we will need to introduce new classes:
- NNStorage: Will care about the storage. It extends Storage class, and will
contain the StorageDirectories.
- NNUtils: Some utility static methods on FSImage and FSEditLog will be moved
here.
- PersistenceManager: FSNameSystem will now be responsible for managing the
FSImage & FSEditLog objects. There will be some logic that will have to moved
out of FSImage to facilite this. For this we propose a PersistanceManager?
object as follows.
For more deep details, see the design document uploaded.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
