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https://issues.apache.org/jira/browse/CASSANDRA-16161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17205936#comment-17205936
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Cameron Zemek commented on CASSANDRA-16161:
-------------------------------------------

In order to not break existing behavior I have made validation compactions have 
their own separate throttle in this patch. However for 4.x I think it make more 
sense to reuse the some rate limiter that is on normal compactions.

> Validation Compactions causing Java GC pressure
> -----------------------------------------------
>
>                 Key: CASSANDRA-16161
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16161
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Cameron Zemek
>            Priority: Normal
>             Fix For: 3.11.x
>
>         Attachments: 16161.patch
>
>
> Validation Compactions are not rate limited which can cause Java GC pressure 
> and result in spikes in latency.



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