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https://issues.apache.org/jira/browse/CASSANDRA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146393#comment-13146393
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Vijay commented on CASSANDRA-2392:
----------------------------------
Sorry wasn't clear earlier,
in SSTR.load(recreatebloom, keysToLoadInCache) we do check to
addPotentialBoundary() for mmap and compressionbuilder...
We can save all of them (Should we make it configurable?) and for Keycache we
can do a testAndLoad...
Basically testAndLoad
Option 1) will check the bloom filter and will check the file for the keys and
if there is then it will add to cache (If cache is saved).
Option 2) Or we can save the descriptor with the keycache file and testAndLoad
can verify if the file exists (which will be cheaper during startup).
> 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
>
>
> 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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