Behavior of deleted documents and replication conflict resolvers?

[Dan Bishop]

RavenDB build 3.0.30037

I think we have encountered a bug in the way that the replication conflict resolver deals with deleted documents. Here is the scenario:

- Server A replicates to Server B (one-way replication)

- Both servers are setup with "Resolve to Latest" conflict resolution

Sequence of events

1) Document Test/1 is written to Server A

2) Server A replicates Test/1 to Server B

3) Document Test/1 is deleted from Server B (yes, I know that this shouldn't happen since the replication topology is master-slave, but it did happen due to a configuration error)

4) Document Test/1 is updated on Server A

5) Server A tried to replicate Test/1 to Server B

6) Server B determines that Test/1 is in a conflict situation, and it resolves the conflict by picking the "Raven-Delete-Marker" document as the winner

It seems wrong that in step (6) Server B chose the "Raven-Delete-Marker" document as the winner, since we have "Resolve to Latest" conflict resolution and the incoming Test/1 document from Server A is more current than the "Raven-Delete-Marker" document.

If the outcome of the above situation isn't a bug, why not?

Thanks,
Dan

[Tal Weiss]

i'm looking at this

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[Dan Bishop]

Thanks for looking at this. Were you able to make a determination on whether the behavior I described is a bug?

[Tal Weiss]

Hi Dan,

I'm currently held up by another issue i'm working on i thought i'll be done with it and then have a look at this issue.

If i won't be able to look at this issue today i'll talk to somebody else in the team to check this out.

[Dan Bishop]

Hi Tal - thanks for the update. Would it make more sense for me to submit an issue for this? I'm pretty sure its a bug, but didn't want to jump too quickly to a conclusion.

Dan

[Oren Eini (Ayende Rahien)]

Please do

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

[Dan Bishop]

http://issues.hibernatingrhinos.com/issue/RavenDB-4291