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https://issues.apache.org/jira/browse/CASSANDRA-2662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035618#comment-13035618
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Brandon Williams commented on CASSANDRA-2662:
---------------------------------------------
There is one problem with this patch, rather that initializing the score to
zero, it needs to create an empty AdaptiveLatencyTracker for them before
checking the scores, otherwise DES.reset() will never have an affect on those
hosts.
> Nodes get ignored by dynamic snitch when read repair chance is zero
> -------------------------------------------------------------------
>
> Key: CASSANDRA-2662
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2662
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7.6
> Reporter: Daniel Doubleday
> Assignee: Brandon Williams
> Priority: Trivial
> Attachments: dynsnitch.patch
>
>
> DynamicEndpointSnitch falls back to subsnitch when one of the scores of the
> endpoints being compared is missing.
> This leads to a stable order of hosts until reads will lead to recorded
> scores.
> If setting read repair chance to 0 and reads are performed with quorum then
> (rf - # quorum nodes) will never get reads.
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