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From "Pavel Yaskevich (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3143) Global caches (key/row)
Date Sat, 03 Dec 2011 17:00:41 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162180#comment-13162180
] 

Pavel Yaskevich commented on CASSANDRA-3143:
--------------------------------------------

And I forgot to mention that:

 - We probably need to have a story as far as upgrading to this patch is concerned (cleaning
old saved caches, migrating to the new global options, ...). It's probably fine just leaving
instructions in the NEWS file as a start, but I'd rather do it with the patch to avoid forgetting.

   Information was added to NEWS.txt

 - I think it'd be better to size the key cache by it's size in bytes rather than by number
of entries, like for the row cache, since 'size alloted to the cache' is really the only measure
that make sense for a user.

   cassandra.yaml option changed to key_cache_size_in_mb
                
> Global caches (key/row)
> -----------------------
>
>                 Key: CASSANDRA-3143
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3143
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Pavel Yaskevich
>            Assignee: Pavel Yaskevich
>            Priority: Minor
>              Labels: Core
>             Fix For: 1.1
>
>         Attachments: 0001-global-key-cache.patch, 0002-global-row-cache-and-ASC.readSaved-changed-to-abstra.patch,
0003-CacheServiceMBean-and-correct-key-cache-loading.patch, 0004-key-row-cache-tests-and-tweaks.patch,
0005-cleanup-of-the-CFMetaData-and-thrift-avro-CfDef-and-.patch, 0006-row-key-cache-improvements-according-to-Sylvain-s-co.patch
>
>
> Caches are difficult to configure well as ColumnFamilies are added, similar to how memtables
were difficult pre-CASSANDRA-2006.

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