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https://issues.apache.org/jira/browse/CASSANDRA-5831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727078#comment-13727078
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Jeremiah Jordan commented on CASSANDRA-5831:
--------------------------------------------
Agreed. Also, if you want to add a "migrate all keyspaces" option, I don't
think anyone would complain.
> Running sstableupgrade on C* 1.0 data dir, before starting C* 1.2 for the
> first time breaks stuff
> -------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-5831
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5831
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: Jeremiah Jordan
> Assignee: Tyler Hobbs
> Priority: Minor
> Fix For: 1.2.9
>
> Attachments:
> 0001-Check-for-current-directory-layout-before-upgrading.patch
>
>
> If you try to upgrade from C* 1.0.X to 1.2.X and run offline sstableupgrade
> to try and migrate the sstables before starting 1.2.X for the first time, it
> messes up the system folder, because it doesn't migrate it right, and then C*
> 1.2 can't start.
> sstableupgrade should either refuse to run against a C* 1.0 data folder, or
> migrate stuff the right way.
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