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From "Vijay (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-2392) Saving IndexSummaries to disk
Date Tue, 08 Nov 2011 19:57:52 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146511#comment-13146511
] 

Vijay commented on CASSANDRA-2392:
----------------------------------

Cool then we can do a small refractor of addPotentialBoundary() used by MmappedSegmentedFile
from the indexFile and ignore keycache in this patch (which will be taken care @ CASSANDRA-3143)?
                
> 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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