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https://issues.apache.org/jira/browse/CASSANDRA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192673#comment-13192673
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Pavel Yaskevich commented on CASSANDRA-2392:
--------------------------------------------
Great, now when we have this one ready, we really need to finish up with
CASSANDRA-3762 to find out if such design makes sense or should we go with
another strategy.
> 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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