[infinispan-dev] Consistency guarantees after merge *without* partition handling

[Dan Berindei]

No, we do not guarantee that an entry will not be lost. When the split
happens, either one partition could end up with 0 owners for a particular
segment, and it will allocate new owners for that segment. When the merge
happens, that partition's consistent hash may be chosen as the merge
consistent hash, and keys on the other partition's owners (which could
still have the value) will be ignored.

Cheers
Dan


On Wed, Jan 21, 2015 at 10:48 AM, Radim Vansa <rvansa at redhat.com> wrote:

> Hi,
>
> one question on the forum [1] led me to thinking whether we offer any
> guarantees at all after merge *without* partition handling. The common
> sense would suggest that we could have inconsistency on entries
> overwritten in one of the partitions, but the entry should not be lost
> completely.
>
> Do we have at least some unit tests trying to confirm this? I have to
> admit that I was not testing this scenario with RadarGun.
>
> Radim
>
> [1]
> https://developer.jboss.org/message/916484?et=watches.email.thread#916484
>
> --
> Radim Vansa <rvansa at redhat.com>
> JBoss DataGrid QA
>
> _______________________________________________
> infinispan-dev mailing list
> infinispan-dev at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/infinispan-dev
>
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