[jira] [Updated] (CASSANDRA-6409) gossip performance improvement at node startup

["Quentin Conner (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-6409?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Quentin Conner updated CASSANDRA-6409:
--------------------------------------

    Attachment: 2013-11-26_17-40-08.png

Taken about 10 minutes after node startup.  Gossip should have settled down by now.

> gossip performance improvement at node startup
> ----------------------------------------------
>
>                 Key: CASSANDRA-6409
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6409
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Quentin Conner
>         Attachments: 2013-11-26_17-40-08.png
>
>
> With large clusters (> 500 nodes) and num_tokens > 255 we sometimes see a node have trouble starting up.  CPU usage for one thread is pegged.
> We see this concurrent with Gossip flaps on the node trying to learn the ring topology.  Other nodes on the ring, that are already at steady state do not seem to suffer.  It is the node joining the large ring that has trouble.



--
This message was sent by Atlassian JIRA
(v6.1#6144)