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https://issues.apache.org/jira/browse/HDFS-15607?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-15607 started by Siyao Meng.
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> Trash directory should be created in advance for snapshottable directory
> ------------------------------------------------------------------------
>
> Key: HDFS-15607
> URL: https://issues.apache.org/jira/browse/HDFS-15607
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
>
> In {{TrashPolicyDefault}}, the {{.Trash}} directory will be created with
> permission 700 without sticky bits by the first user that attempts to move a
> file to the trash. This causes issue when a second user tries to move a file
> to that trash because the second user might not have the permission to the
> trash.
> Only affects the user when trash is enabled inside snapshottable directories,
> and when the user doesn't have admin permissions.
> Solution: Create a .Trash directory with 777 permission and sticky bits
> enabled (similar solution as HDFS-10324).
> Also need to deal with some corner cases:
> 1. even when the snapshottable directory trash root config is not enabled,
> create the {{.Trash}} directory anyway?
> 2. When immediately disallowing trash, it shouldn't fail. i.e. remove the
> empty .Trash directory when disallowing snapshot on a dir
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