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https://issues.apache.org/jira/browse/CASSANDRA-8969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15208747#comment-15208747
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Jeremy Hanna commented on CASSANDRA-8969:
-----------------------------------------

Not to bikeshed too much but what do you think of making it a little more 
explicit?

{quote}
+# For this reason, you should avoid putting these settings too high. Of course
+# putting them too low is equally ill-advised since clients could get timeouts 
even
+# for successful operations just because the timeout setting is too tight.
+# In other words, if you are timing out requests because of underlying 
resource constraints
+# then increasing the timeout will just cause more problems.
{quote}

> Add indication in cassandra.yaml that rpc timeouts going too high will cause 
> memory build up
> --------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-8969
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8969
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Configuration
>            Reporter: Jeremy Hanna
>            Assignee: Jeremy Hanna
>            Priority: Minor
>              Labels: lhf
>             Fix For: 3.x
>
>         Attachments: 8969.txt
>
>
> It would be helpful to communicate that setting the rpc timeouts too high may 
> cause memory problems on the server as it can become overloaded and has to 
> retain the in flight requests in memory.  I'll get this done but just adding 
> the ticket as a placeholder for memory.



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