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From "Brandon Williams (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3706) Back up configuration files on startup
Date Sat, 21 Jan 2012 02:30:40 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190275#comment-13190275
] 

Brandon Williams commented on CASSANDRA-3706:
---------------------------------------------

bq. We should probably add another ("cluster_system"?) that is reserved for internal use but
is replicated normally.

The wrinkle in this is something we've encountered before... what do we set the RF to when
we don't know how many nodes there will be?
                
> Back up configuration files on startup
> --------------------------------------
>
>                 Key: CASSANDRA-3706
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3706
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Tools
>            Reporter: Jonathan Ellis
>            Assignee: Dave Brosius
>            Priority: Minor
>              Labels: lhf
>             Fix For: 1.1
>
>         Attachments: save_configuration.diff, save_configuration_2.diff, save_configuration_3.diff
>
>
> Snapshot can backup user data, but it's also nice to be able to have known-good configurations
saved as well in case of accidental snafus or even catastrophic loss of a cluster.  If we
check for changes to cassandra.yaml, cassandra-env.sh, and maybe log4j-server.properties on
startup, we can back them up to a columnfamily that can then be handled by normal snapshot/backup
procedures.

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