[jira] Resolved: (CASSANDRA-476) Pluggable Load and contrib example

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-476?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-476.
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    Resolution: Won't Fix

I don't think we can really support truly heterogeneous capacity.

the problem is that each node's range is replicated to other nodes, so if you have a single node w/ 2x more capacity than other nodes, you can't just give it 2x the range or its replicas will be swamped.

Moving to a dynamo-like system of multiple virtual nodes per machine might allow this, but IMO the complexity is not worth it.

For long-lived clusters, I would recommend starting w/ relatively high end machines, then keeping capacity (relatively) constant as cost decreases.  So heterogeneous in cost rather than capacity.

> Pluggable Load and contrib example
> ----------------------------------
>
>                 Key: CASSANDRA-476
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-476
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Contrib, Core
>    Affects Versions: 0.5
>            Reporter: Michael Greene
>            Priority: Minor
>             Fix For: 0.9
>
>
> With CASSANDRA-385 intellibootstrap, a site-specific definition of Load becomes more useful, especially for those with heterogenous capacity in their cluster.

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