[jira] [Commented] (HDDS-2939) Ozone FS namespace

["Mukul Kumar Singh (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-2939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17104502#comment-17104502 ] 

Mukul Kumar Singh commented on HDDS-2939:
-----------------------------------------

Thanks for the questions [~Sammi]. Please find my replies inline.

a) The objects will also be parsed just like files and directories, 
Example
 a/b/c/d.json ---> a/b/c/ is the prefix and d.json is the key. 

 a/b/c/  will go to prefix table, while d.json will goto the key table.

b) Yes, all the incoming paths will be interpreted as file objects.

c) The document was written thinking of the o3fs scheme, However with ofs scheme, when renames happen at a directory. the lock will still be taken at the corresponding bucket. As even with ofs, renames across buckets will not be supported.

> 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: Rakesh Radhakrishnan
>            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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