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Posted to issues@ozone.apache.org by "Sammi Chen (Jira)" <ji...@apache.org> on 2020/03/24 12:29:00 UTC
[jira] [Commented] (HDDS-2939) Ozone FS namespace
[ https://issues.apache.org/jira/browse/HDDS-2939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17065568#comment-17065568 ]
Sammi Chen commented on HDDS-2939:
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Hi [~sdeka]， thanks for working on the feature. For the design, there is something I want to discuss,
bq. 1. Interoperability with Object Access. However, there are use cases where objects are written to and read from using a mix of S3 and File system interfaces.
It seems all file will go to File table, how about object? Still save to current keyTable? If File table and Object table will co-exist, how can FS and Object interface implementation tell which table to search for the key/file if the key/file is not written using the same interface?
bq. 2. Interoperability with Object Access#Runtime Overhead
Does it mean all the incomming object read request will be interpreted as file path and search directory/file table first?
bq. 3. Concurrency for Rename#A simple workaround to this problem might be to have a bucket namespace lock.
So each bucket will have it's own FS namespace? Will this feature support the new "ofs://" HDDS-2665 ?
> Ozone FS namespace
> ------------------
>
> Key: HDDS-2939
> URL: https://issues.apache.org/jira/browse/HDDS-2939
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: Ozone Manager
> Reporter: Supratim Deka
> Assignee: Supratim Deka
> Priority: Major
> Attachments: Ozone FS Namespace Proposal v1.0.docx
>
>
> Create the structures and metadata layout required to support efficient FS namespace operations in Ozone - operations involving folders/directories required to support the Hadoop compatible Filesystem interface.
> The details are described in the attached document. The work is divided up into sub-tasks as per the task list in the document.
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