mnesia replication (Are there checksums?)

Francesco Cesarini (Erlang Training & Consulting) <>
Wed Aug 31 13:08:41 CEST 2005


I would class this as a serious bug! I have a vague recollection that 
there was a checksum being computed for every table, but have looked 
everywhere and can not find any reference for it. Maybe it was just a 
discussion I had with some one 10 years ago, or something... Did it ever 
happen?

Francesco
--
http://www.erlang-consulting.com


Dan Gudmundsson wrote:
> chandru writes:
>  > Hi,
>  > 
>  > On 30/08/05, Serge Aleynikov <> wrote:
>  > > Hello,
>  > > 
>  > > Could someone comment on the effect of short network outages ( < 10-15
>  > > s) on mnesia replication and how to prevent the inconsistency
>  > > demonstrated in the example below?   I intentionally did not alter the
>  > > net_ticktime kernel parameter so that it would be greater than the
>  > > duration of the brief network outage.
>  > 
>  > You can't really prevent this inconsistency if you are using dirty
>  > operations. Have you tried the same test using transactions instead of
>  > dirty operations.
> 
> Since dirty_operation don't grab a lock you should be able see the same problem
> with a working network ..
> 
> Dirty is dirty, be aware of that.
> 
> /Dan
> 
> 




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