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https://issues.apache.org/jira/browse/CASSANDRA-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Williams updated CASSANDRA-5135:
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Description: In the vein of CASSANDRA-3881, cPR is expensive and can end up
dominating the gossip thread, causing all sorts of havoc. One simple way we
can triage this is to simply give it it's own executor with a queue size of 1
(since we don't actually need to recalculate for every host we see if we
suddenly see many of them) and do the calculation asynchronously, freeing up
the gossiper. (was: In the vein of CASSANDRA-3881, cPR is expensive and can
end up dominating the gossip thread, causing all sorts of havoc. One simple
way we triage this is to simply give it it's own executor with a queue size of
1 (since we don't actually need to recalculate for every host we see if we
suddenly see many of them) and do the calculation asynchronously, freeing up
the gossiper.)
> calculatePendingRanges could be asynchronous
> --------------------------------------------
>
> Key: CASSANDRA-5135
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5135
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.1.0
> Reporter: Brandon Williams
> Assignee: Brandon Williams
> Fix For: 1.1.9
>
> Attachments: 5135.txt
>
>
> In the vein of CASSANDRA-3881, cPR is expensive and can end up dominating the
> gossip thread, causing all sorts of havoc. One simple way we can triage this
> is to simply give it it's own executor with a queue size of 1 (since we don't
> actually need to recalculate for every host we see if we suddenly see many of
> them) and do the calculation asynchronously, freeing up the gossiper.
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