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From Wz1975 <wz1...@YAHOO.COM>
Subject Re: hinted handoff disabling trade-offs
Date Tue, 05 Mar 2013 05:17:01 GMT
Why do you think disabling hinted handoff will improve memory usage? 


Thanks.
-Wei

Sent from my Samsung smartphone on AT&T

-------- Original message --------
Subject: Re: hinted handoff disabling trade-offs 
From: Michael Kjellman <mkjellman@barracuda.com> 
To: "user@cassandra.apache.org" <user@cassandra.apache.org> 
CC:  

Repair is slow.

On Mar 4, 2013, at 8:07 PM, "Matt Kap" <matvey1414@gmail.com> wrote:

> I am looking to get a second opinion about disabling hinted-handoffs. I
> have an application that can tolerate a fair amount of inconsistency
> (advertising domain), and so I'm weighting the pros and cons of hinted
> handoffs. I'm running Cassandra 1.0, looking to upgrade to 1.1 soon.
> 
> Pros of disabling hinted handoffs:
> - Reduces heap
> - Improves GC performance
> - No risk of hinted-handoffs building up
> - No risk of hinted-handoffs flooding a node that just came up
> 
> Cons
> - Some writes can be lost, at least until repair runs
> 
> Can anyone suggest any other factors that I'm missing here. Specifically
> reasons
> not to do this.
> 
> Cheers!
> -Matt

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