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From Jonathan Colby <jonathan.co...@gmail.com>
Subject Re: consistency ONE and "null"
Date Thu, 07 Apr 2011 06:56:11 GMT
that makes sense.  thanks!

On Apr 7, 2011, at 8:36 AM, Stephen Connolly wrote:

> also there is a configuration parameter that controls the probability of any read request
triggering a read repair
> 
> - Stephen
> 
> ---
> Sent from my Android phone, so random spelling mistakes, random nonsense words and other
nonsense are a direct result of using swype to type on the screen
> 
> On 7 Apr 2011 07:35, "Stephen Connolly" <stephen.alan.connolly@gmail.com> wrote:
> > as I understand, the read repair is a background task triggered by the read
> > request, but once the consistency requirement has been met you will be given
> > a response.
> > 
> > the coordinator at CL.ONE is allowed to return your responce once it has one
> > response (empty or not) from any replica. if the first response is empty,
> > you get null
> > 
> > - Stephen
> > 
> > ---
> > Sent from my Android phone, so random spelling mistakes, random nonsense
> > words and other nonsense are a direct result of using swype to type on the
> > screen
> > On 7 Apr 2011 00:10, "Jonathan Colby" <jonathan.colby@gmail.com> wrote:
> >>
> >> Let's say you have RF of 3 and a write was written to 2 nodes. 1 was not
> > written because the node had a network hiccup (but came back online again).
> >>
> >> My question is, if you are reading a key with a CL of ONE, and you happen
> > to land on that node that didn't get the write, will the read fail
> > immediately?
> >>
> >> Or, would read repair check the other replicas and fetch the correct data
> > from the other node(s)?
> >>
> >> Secondly, is read repair done according to the consistency level, or is
> > read repair an independent configuration setting that can be turned on/off.
> >>
> >> There was a recent thread about a different variation of my question, but
> > went into very technical details, so I didn't want to hijack that thread.


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