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From Ryan King <r...@twitter.com>
Subject Re: thinking about dropping hinted handoff
Date Tue, 23 Feb 2010 00:56:44 GMT
2010/2/22 Peter Schüller <scode@spotify.com>:
>> #3 is, I think, the right answer. It make our system simpler and it
>> makes the behavior in failure conditions more predictable and safe.
>
> Any thoughts on time-to-self-heal? My impression browsing the code,
> and it seems to be confirmed by some wiki material, is that
> anti-entropy is triggered only during full compactations. While hinted
> handoff is never a guarantee, doing without it completely probably
> increases the urgency of anti-entropy.

Maybe I mis-read the code, but I thought it was trigger for every compaction.

-ryan

> In general, what are people's thoughts on the appropriate mechanism to
> gain confidence that the cluster as a whole is reasonably consistent?
> In particular in relation to performing maintenance that may require
> popping nodes in and out in some kind of rolling fashion. Are full
> compactations expected to be something you would want to trigger
> semi-regularly on production clusters by hand?
>
> --
> / Peter Schuller aka scode
>

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