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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5366) UpgradeSSTables Optimisation
Date Wed, 20 Mar 2013 19:09:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13608032#comment-13608032
] 

Brandon Williams commented on CASSANDRA-5366:
---------------------------------------------

bq. Can't we just change upgradesstable to skip current version by default and add a simple
--include-all flag to include them?

That would work for me, we have enough nodetool commands.
                
> UpgradeSSTables Optimisation
> ----------------------------
>
>                 Key: CASSANDRA-5366
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5366
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Brooke Bryan
>
> 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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