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From "Brandon Williams (Jira)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-15859) Avoid per-host hinted-handoff throttle being rounded to 0 in large cluster
Date Fri, 10 Jul 2020 13:51:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-15859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams updated CASSANDRA-15859:
-----------------------------------------
    Reviewers: Brandon Williams, Robert Stupp  (was: Robert Stupp)

> Avoid per-host hinted-handoff throttle being rounded to 0 in large cluster
> --------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15859
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15859
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Consistency/Hints
>            Reporter: ZhaoYang
>            Assignee: ZhaoYang
>            Priority: Normal
>             Fix For: 3.0.x, 3.11.x, 4.x
>
>
> When "hinted_handoff_throttle_in_kb" is sufficiently small or num of nodes in the cluster
is sufficiently large, the per-host throttle will be rounded to 0, aka. unthrottled.
>  
> {code:java|title=HintsDispatchExecutor.java}
> int throttleInKB = DatabaseDescriptor.getHintedHandoffThrottleInKB() / nodesCount;
> this.rateLimiter = RateLimiter.create(throttleInKB == 0 ? Double.MAX_VALUE : throttleInKB
* 1024);
> {code}
> [trunk-patch|https://github.com/apache/cassandra/pull/616]



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