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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Updated] (OAK-3854) TarMK tools should check whether they run against a matching version of the repository
Date Fri, 08 Jan 2016 17:04:39 GMT

     [ https://issues.apache.org/jira/browse/OAK-3854?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dürig updated OAK-3854:
-------------------------------
    Summary: TarMK tools should check whether they run against a matching version of the repository
 (was: TarMK tools should check wehther they run against a matching version of the repository)

> TarMK tools should check whether they run against a matching version of the repository
> --------------------------------------------------------------------------------------
>
>                 Key: OAK-3854
>                 URL: https://issues.apache.org/jira/browse/OAK-3854
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: run
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>              Labels: resilience, tooling
>
> Running tools that write into a segment store might result in unwanted upgrading if the
version of the tool uses a more recent segment version than the store. E.g. off line compaction
currently upgrades segment format 10 to 11. 
> To protected against inadvertent upgrades, a tool should check whether the segment version
of the store matches its expectation (currently 11). If not, the tool should exit with a respective
warning / error. For some tools it can make sense to provide a flag (e.g. {{--force}}) to
override this. With this e.g. offline compaction can still be used for upgrading a segment
store if explicitly told to do so. 



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