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https://issues.apache.org/jira/browse/CASSANDRA-5524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13644987#comment-13644987
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Jonathan Ellis commented on CASSANDRA-5524:
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Upgrading snapshots automatically sounds like a bad idea to me since it breaks
the hard link and could thus cause a massive expansion in disk space used.
If we're going to upgrade stuff in an arbitrary directory, sounds like we
should really have an offline tool rather than round-trip it through JMX.
> Allow upgradesstables to be run against a specified directory
> -------------------------------------------------------------
>
> Key: CASSANDRA-5524
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5524
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Tyler Hobbs
> Priority: Minor
>
> Currently, upgradesstables only modifies live SSTables. Because
> sstableloader cannot stream old SSTable formats, this makes it difficult to
> restore data from a snapshot taken in a previous major version of Cassandra.
> Allowing the user to specify a directory for upgradesstables would resolve
> this, but it may also be nice to upgrade SSTables in snapshot directories
> automatically or with a separate flag.
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