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https://issues.apache.org/jira/browse/CASSANDRA-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548552#comment-13548552
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Brandon Williams edited comment on CASSANDRA-5135 at 1/9/13 3:00 PM:
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Patch to signal the executor to recalculate in handleState* and then wait for
it in places where we expect it to be completed.
was (Author: brandon.williams):
Patch to signal the executor to recalculate in handleState* and then wait
it in places where we expect it to be completed.
> 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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