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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (CASSANDRA-688) cache refinements
Date Thu, 14 Jan 2010 19:25:55 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800314#action_12800314
] 

Jonathan Ellis edited comment on CASSANDRA-688 at 1/14/10 7:24 PM:
-------------------------------------------------------------------

rows are per cf, keys are per sstable.

the mbean reports (and allows setting) the key totals per-cf too, so the sstable business
is mostly an implementation detail.

      was (Author: jbellis):
    rows are per cf, keys are per sstable.

the mbean report (and allows setting) the key totals per-cf too, so the sstable business is
mostly an implementation detail.
  
> cache refinements
> -----------------
>
>                 Key: CASSANDRA-688
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-688
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>             Fix For: 0.9
>
>         Attachments: 0001-move-cache-classes-to-cassandra.cache-package.txt, 0002-extract-InstrumentingCache-from-jmx-code.txt,
0003-add-JMXAggregatingCache-to-present-all-the-SSTR-keycac.txt, 0004-change-RowsCachedFraction-option-to-RowsCached-specifi.txt,
0005-allow-setting-row-cache-size-from-jmx.txt, 0006-approximate-capacity-setting-in-key-cache-by-adjusting.txt
>
>
> (continued from CASSANDRA-678)
>  - instrument keycache in a way that doesn't make performance suck
>  - add Ryan's suggestion of absolute row count config option
>  - adjust cache size live

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