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https://issues.apache.org/jira/browse/CASSANDRA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vijay updated CASSANDRA-2392:
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Attachment: 0001-save-summaries-to-disk-v4.patch
Hope the attached patch has all you needed... I added a check to see the disk
access mode if it changed then we will recreate the summaries.... For now
ignore the saveSummaries called when keycache is read. i will fix it in the
other ticket.
> 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: 1.1
>
> Attachments: 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
>
>
> 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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