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From "Peter Schuller (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3881) reduce computational complexity of processing topology changes
Date Sun, 26 Feb 2012 01:27:48 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216604#comment-13216604
] 

Peter Schuller commented on CASSANDRA-3881:
-------------------------------------------

Even with post-CASSANDRA-3831 code, the need here is great. When bootstrapping a new node
into a pre-existing cluster of 200+ nodes, the time it takes being CPU bound in gossip stage
on the node being bootstrapped, is so large that we're close to seeing it initiate the bootstrap
streaming process before being done CPU spinning i gossip stage.

We're increasing the bootstrap wait delay for now to work around this.
                
> reduce computational complexity of processing topology changes
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-3881
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3881
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Peter Schuller
>            Assignee: Peter Schuller
>
> This constitutes follow-up work from CASSANDRA-3831 where a partial improvement was committed,
but the fundamental issue was not fixed. The maximum "practical" cluster size was significantly
improved, but further work is expected to be necessary as cluster sizes grow.

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