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Pavel Yaskevich commented on CASSANDRA-2392:
--------------------------------------------
We already hold a primary index file which has information about index/data
segment boundaries, saving boundary information twice would be redundant. Also
we don't want to save key cache because it could be irrelevant by the time node
starts and second because we are planing to add global key/row caches in 1.1.
> 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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