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https://issues.apache.org/jira/browse/CASSANDRA-5366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13612721#comment-13612721
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Rafal Kwasny commented on CASSANDRA-5366:
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Any chances this will get into 1.1.4? we have exactly the same problem, after
upgrading to 1.2 we need to run upgradesstables and with 1TB data/node doing it
twice for some sstables is a waste of time.
> UpgradeSSTables Optimisation
> ----------------------------
>
> Key: CASSANDRA-5366
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5366
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Brooke Bryan
> Assignee: Sylvain Lebresne
> Fix For: 1.2.4
>
> Attachments: 5366.txt
>
>
> Currently, if you run upgradesstables, cassandra will run through every
> single SSTable within the scope of the request. Where we have some large
> tables, an upgrade on a single sstable can take hours, even if its already
> sat on the same version.
> After upgrading to a new cassandra version, it would be ideal to be able to
> upgrade only sstables not sat in the latest version, as it seems like it just
> needs to do a massive amount of disk IO, with nothing being achieved at the
> end of it.
> Maybe its worth putting an option onto the nodetool command, or creating a
> new command for this type of upgrade
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