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https://issues.apache.org/jira/browse/CASSANDRA-5333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599205#comment-13599205
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Brandon Williams commented on CASSANDRA-5333:
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Care to say where in the code the issue is, since you dug in?
> dynamic snitch only worked for NetworkTopology due to RemoteNode
> ----------------------------------------------------------------
>
> Key: CASSANDRA-5333
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5333
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.2.2
> Environment: redhat linux. we dug into the code though and it
> appears to be the way it is coded. we were told to file a ticket for this on
> the email list.
> Reporter: Dean Hiller
> Labels: snitch
>
> We dug into cassandra code and found out SimpleSnitch was not working with
> DynamicSnitch. Specifically, the code turns a slow node into a remote node
> and network topology works with that. We also had to move to LOCAL_QUOROM
> and finally we have dynamic snitch working. To test this, we basically told
> the NIC using the "tc" command to slow every packet down by 500ms on node 2
> (out of 4 nodes). We finally have a blazingly fast client with node 2 slowed
> down. If we do QUOROM, the issue comes back and the client is slow again.
> Same with SimpleSnitch. To reproduce, run a 4 node cluster and use "tc" to
> give every packet a slowdown of 500ms.
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