[
https://issues.apache.org/jira/browse/CASSANDRA-3640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Edward Capriolo updated CASSANDRA-3640:
---------------------------------------
Affects Version/s: 0.8.7
Issue Type: Improvement (was: Bug)
> Dynamic Snitch does not compute scores if no direct reads hit the node.
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-3640
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3640
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: 0.8.7
> Reporter: Edward Capriolo
> Priority: Minor
>
> We can into an interesting situation. We added 2 nodes to our cluster.
> Strangely this node performed worse then other nodes. It had more IOwait for
> example. The impact was not major but it was noticeable. Later I determined
> that this Cassandra node was not in our client's list of nodes and our
> clients do not auto discover. I confirmed that the host did not have any
> scores inside it's dynamic snitch.
> It is counter intuitive that a node receiving less or no direct user requests
> would perform worse then others. I am not sure of the dynamic that caused
> this.
> I understand that DSnitch is supposed to have it's own view of the world,
> maybe it could share information with neighbours. Again this is more of a
> client configuration issue then a direct Cassandra issue, but I found it
> quite interesting.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
