cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-5135) calculatePendingRanges could be asynchronous
Date Wed, 09 Jan 2013 15:00:18 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-5135:
----------------------------------------

    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.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message