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From "Vijay (Updated) (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-2392) Saving IndexSummaries to disk
Date Tue, 24 Jan 2012 23:44:40 GMT


Vijay updated CASSANDRA-2392:

    Attachment: 0001-CASSANDRA-2392-v6.patch

The problem with v5 is that when we do the loadSummary() we will have ibuilder and dbuilder
populated... when boolean readIndex is true we will repopulate it again....

Attached v6 fixes it and tested. Thanks!
> Saving IndexSummaries to disk
> -----------------------------
>                 Key: CASSANDRA-2392
>                 URL:
>             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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