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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-432) support undelete, snapshots, or other mechanism to recover lost files
Date Tue, 06 Feb 2007 20:35:06 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12470732

Doug Cutting commented on HADOOP-432:

> a single invocation may result in a large load on the namenode

That's a namenode issue, not a trashcan issue.  If deleting a large folder can lock up the
namenode for an unacceptable period, then the namenode should address that, independent of
whether the deletion happens via the trashcan, no?

So, unless there are more comments, I'll implement the feature where attempting to move something
that's already in the trash to the trash causes it to be deleted, and re-submit this patch.

> support undelete, snapshots, or other mechanism to recover lost files
> ---------------------------------------------------------------------
>                 Key: HADOOP-432
>                 URL: https://issues.apache.org/jira/browse/HADOOP-432
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Yoram Arnon
>         Assigned To: Doug Cutting
>         Attachments: trash.patch, undelete12.patch, undelete16.patch, undelete17.patch
> currently, once you delete a file it's gone forever.
> most file systems allow some form of recovery of deleted files.
> a simple solution would be an 'undelete' command.
> a more comprehensive solution would include snapshots, manual and automatic, with scheduling

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