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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CASSANDRA-2405) should expose 'time since last successful repair' for easier aes monitoring
Date Mon, 13 Jun 2011 09:39:51 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048506#comment-13048506
] 

Pavel Yaskevich edited comment on CASSANDRA-2405 at 6/13/11 9:38 AM:
---------------------------------------------------------------------

I think I will go with this model: key - "{KS}/{CF}" (string), columns are times repair completed
successfully, subcolumns are range (string) and started_at (millis). That will it easy to
query time since last successful repair + will give us a change to store valuable information.

      was (Author: xedin):
    I think I will go with this model: key - KS_CF (string), columns are times repair completed
successfully, subcolumns are range (string) and started_at (millis). That will it easy to
query time since last successful repair + will give us a change to store valuable information.
  
> should expose 'time since last successful repair' for easier aes monitoring
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-2405
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2405
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Peter Schuller
>            Assignee: Pavel Yaskevich
>            Priority: Minor
>             Fix For: 0.8.1
>
>         Attachments: CASSANDRA-2405-v2.patch, CASSANDRA-2405.patch
>
>
> The practical implementation issues of actually ensuring repair runs is somewhat of an
undocumented/untreated issue.
> One hopefully low hanging fruit would be to at least expose the time since last successful
repair for a particular column family, to make it easier to write a correct script to monitor
for lack of repair in a non-buggy fashion.

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