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https://issues.apache.org/jira/browse/HADOOP-16140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16775488#comment-16775488
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Stephen O'Donnell commented on HADOOP-16140:
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I put the version down as 3.3.0 for now and submitted the patch.
> Why not just add an option to -expunge. It exists, has tests, documentation,
> etc?
I am not sure about this. Expunge doesn't really empty the trash as I explained
above, it kind of does what the NN does internally. So if we added an option,
eg expunge -emptyNow, does that make it more or less confusing? It would be
pretty easy to add this to expunge and have it call the new methods I added if
we think that makes sense. I am open to doing it either way.
Any suggestions on what to call the option?
expunge -immediately
expunge -emptyTrash
expunge -?
I will have a look at the other two points shortly.
> Add emptyTrash option to purge trash immediately
> ------------------------------------------------
>
> Key: HADOOP-16140
> URL: https://issues.apache.org/jira/browse/HADOOP-16140
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 3.3.0
> Reporter: Stephen O'Donnell
> Assignee: Stephen O'Donnell
> Priority: Major
> Attachments: HDFS-14200.001.patch
>
>
> I have always felt the HDFS trash is missing a simple way to empty the
> current users trash immediately. We have "expunge" but in my experience
> supporting clusters, end users find this confusing. When most end users run
> expunge, they really want to empty their trash immediately and get confused
> when expunge does not do this.
> This can result in users performing somewhat dangerous "skipTrash" operations
> on the trash to free up space. The alternative, which most users will not
> figure out on their own is:
> # Run the expunge command once - this will move the current folder to a
> checkpoint and remove any old checkpoints older than the retention interval
> # Wait over 1 minute and then run expunge again, overriding fs.trash.interval
> to 1 minute using the following command hadoop fs -Dfs.trash.interval=1
> -expunge.
> With this Jira I am proposing to add a extra command, "hdfs dfs -emptyTrash"
> that purges everything in the logged in users Trash directories immediately.
> How would the community feel about adding this new option? I will upload a
> patch for comments.
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