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https://issues.apache.org/jira/browse/CASSANDRA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13256804#comment-13256804
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Jonathan Ellis commented on CASSANDRA-2392:
-------------------------------------------

For the record, I'm still fine with saying "loading caches will slow down 
startup, deal with it," but I think we have a good plan of attack on 3762 now 
and it may be simpler to just do that first, before rebasing this.  Which is 
also fine.
                
> Saving IndexSummaries to disk
> -----------------------------
>
>                 Key: CASSANDRA-2392
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2392
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Chris Goffinet
>            Assignee: Vijay
>            Priority: Minor
>             Fix For: 1.2
>
>         Attachments: 0001-CASSANDRA-2392-v6.patch, 
> 0001-re-factor-first-and-last.patch, 0001-save-summaries-to-disk-v4.patch, 
> 0001-save-summaries-to-disk.patch, 0002-save-summaries-to-disk-v2.patch, 
> 0002-save-summaries-to-disk-v3.patch, 0002-save-summaries-to-disk.patch, 
> CASSANDRA-2392-v5.patch
>
>
> For nodes with millions of keys, doing rolling restarts that take over 10 
> minutes per node can be painful if you have 100 node cluster. All of our time 
> is spent on doing index summary computations on startup. It would be great if 
> we could save those to disk as well. Our indexes are quite large.

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