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Vijay commented on CASSANDRA-3722:
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I was almost complete with the patch but filtering based on pending queue can
be potentially dangerous.
On a Multi region cluster the pending commands in the local replicas will be
almost always higher than remote ones because they dont receive reads. We might
want to filter might not want to filter based on pending.
We can do a hackie solution by padding the score of the remote DC's to be
higher artificial value than the local DC, What do you guys think?
> Send Hints to Dynamic Snitch when Compaction or repair is going on for a node.
> ------------------------------------------------------------------------------
>
> Key: CASSANDRA-3722
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3722
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.1.0
> Reporter: Vijay
> Assignee: Vijay
> Priority: Minor
>
> Currently Dynamic snitch looks at the latency for figuring out which node
> will be better serving the requests, this works great but there is a part of
> the traffic sent to collect this data... There is also a window when Snitch
> doesn't know about some major event which are going to happen on the node
> (Node which is going to receive the data request).
> It would be great if we can send some sort hints to the Snitch so they can
> score based on known events causing higher latencies.
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