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Date: Tue, 23 Oct 2012 20:37:14 +0000 (UTC)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-4097) provide CLI support for
 create/delete/list snapshots
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    [ https://issues.apache.org/jira/browse/HDFS-4097?page=3Dcom.atlassian.=
jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D13482=
659#comment-13482659 ]=20

Suresh Srinivas commented on HDFS-4097:
---------------------------------------

bq. Generally users want snapshots after they make a mistake and want to ro=
llback =E2=80=93 not before they make a mistake. If they knew they were abo=
ut to make a mistake they would probably just decide not to do so.

Really? There are times when I do not know if I am (or the code) is going t=
o make a mistake or not. So as insurance I would take snapshots, just in ca=
se I need to undo the changes. While in the use case you have brought up a =
scheduled snapshot be sufficient, it may not be sufficient for all the case=
s. I believe we need on demand snapshots as well.
               =20
> provide CLI support for create/delete/list snapshots
> ----------------------------------------------------
>
>                 Key: HDFS-4097
>                 URL: https://issues.apache.org/jira/browse/HDFS-4097
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs client, name-node
>    Affects Versions: Snapshot (HDFS-2802)
>            Reporter: Brandon Li
>            Assignee: Brandon Li
>              Labels: needs-test
>         Attachments: HDFS-4097.patch, HDFS-4097.patch
>
>
> provide CLI support for create/delete/list snapshots

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