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Posted to issues@ozone.apache.org by "Sammi Chen (Jira)" <ji...@apache.org> on 2020/09/04 03:52:00 UTC
[jira] [Comment Edited] (HDDS-4155) Directory and filename can end
up with same name in a path
[ https://issues.apache.org/jira/browse/HDDS-4155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17190528#comment-17190528 ]
Sammi Chen edited comment on HDDS-4155 at 9/4/20, 3:51 AM:
-----------------------------------------------------------
Create Key via S3, and Create Directory through Fs.
open key -> /a/b/c
CreateDirectory -> /a/b/c
CommitKey -> /a/b/c
So, now in Ozone we will have directory and file with name "c",
[~bharat] this case, we will have directory "c" and file "c" in the system both? I thought the third step CommitKey will fail.
was (Author: sammi):
Create Key via S3, and Create Directory through Fs.
open key -> /a/b/c
CreateDirectory -> /a/b/c
CommitKey -> /a/b/c
So, now in Ozone we will have directory and file with name "c",
[~bharat] this case, we will have directory "c" and file "c" in the system both? I thought the third step CommitKey should fail.
> Directory and filename can end up with same name in a path
> ----------------------------------------------------------
>
> Key: HDDS-4155
> URL: https://issues.apache.org/jira/browse/HDDS-4155
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
> Priority: Major
> Labels: pull-request-available
>
> Scenario:
> Create Key via S3, and Create Directory through Fs.
> # open key -> /a/b/c
> # CreateDirectory -> /a/b/c
> # CommitKey -> /a/b/c
> So, now in Ozone we will have directory and file with name "c"
> When created through Fs interface.
> # create file -> /a/b/c
> # CreateDirectory -> /a/b/c
> # CommitKey -> /a/b/c
> So, now in Ozone we will have directory and file with name "c"
>
> # InitiateMPU /a/b/c
> # Create Part1 /a/b/c
> # Commit Part1 /a/b/c
> # Create Directory /a/b/c
> # Complete MPU /a/b/c
> So, now in Ozone, we will have directory and file with name "c". In MPU this is one example scenario.
>
> Few proposals/ideas to solve this:
> # Check during commit whether a directory already exists with same name. But disadvantage is after user uploads the entire data during last stage we fail. (File system with create in progress acts similarly. Scenario: 1. vi t1 2. mkdir t1 3. Save t1: (Fail:"t1" is a directory)
> # During create directory check are there any open key creation with same name and fail.
>
> Any of the above approaches are not final, this Jira is opened to discuss this issue and come up with solution.
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