Clean up Storage/StorageInfo classes after federation
-----------------------------------------------------
Key: HDFS-2559
URL: https://issues.apache.org/jira/browse/HDFS-2559
Project: Hadoop HDFS
Issue Type: Improvement
Components: data-node
Affects Versions: 0.23.1
Reporter: Todd Lipcon
Assignee: Todd Lipcon
After federation, there are many different identifiers floating around in a
cluster: cluster ID, namespace ID, block pool ID, plus the versioning
identifiers cTime and layoutVersion. Some of these are cluster-wide, whereas
others may be different within a DN as it talks to different NNs (see the
federation design doc for more info). However, the current class heirarchy in
trunk has DataStorage (the DN-wide storage class) inherit from Storage which
inherits from StorageInfo, which contains a namespaceID. Thus, DataStorage has
this unused member which confuses things.
This JIRA is to split up StorageInfo into separate classes/interfaces so that
only the necessary identifiers are used by each piece of the DN.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
