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Diego Marron updated HDFS-1489: ------------------------------- Attachment: HDFS-1489.pdf The design doc with more details about the work on this patch > 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 > Attachments: HDFS-1489.pdf > > > 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.