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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4166) Add support for scheduled automatic snapshots
Date Thu, 08 Nov 2012 19:40:12 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13493437#comment-13493437

Suresh Srinivas commented on HDFS-4166:

bq. What's the advantage of adding this to HDFS itself versus just automating snapshot creation
via cron or some other periodic scheduling system? 
That is a good question. I am mulling over this as well, along the same lines as you. Perhaps
we could discuss this in today's meetup.

The main reason why I am considering this is - you need to have a separate scheduling system,
that needs to be highly available, then it needs to deal with non-availability of namenode
etc. So a daemon thread along the lines of replication factor may be a simpler solution. But
want to hear what others think.
> Add support for scheduled automatic snapshots
> ---------------------------------------------
>                 Key: HDFS-4166
>                 URL: https://issues.apache.org/jira/browse/HDFS-4166
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>    Affects Versions: Snapshot (HDFS-2802)
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
> This jira will track the work related to supporting automatic scheduled snapshots. 

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