Re: [jbosscache-dev] Cache unable to write to cluster
On 12 Nov 2008, at 10:25, Vladimir Blagojevic wrote:
Manik Surtani wrote:
>
> Yes, this was always an issue with the way we used FLUSH - that
> someone in the group could initiate a FLUSH and then die leaving
> other members' flushBlockGates closed. TBH, apart from adding
> timeouts to the flushBlockGate, I can't see how we would get around
> this.
Me too. I am confused how all these issues started to pop out now.
How come they slipped for so long?
Yes, because in theory they could have happened with JBC 2.x, 1.x, etc.
> Vladimir/Bela - in the scenario described (node initiates a FLUSH
> and then dies) would other nodes still see a view change relating
> to the node dying?
They would. However, I will add this test case to verify it.
Ok - so we could add an extra check into the view change listener to
force an unblock if a member who initiated a FLUSH dies. We would
also have to record the address of the member initiating the FLUSH in
the flushBlockGate.
Cheers
--
Manik Surtani
Lead, JBoss Cache
manik(a)jboss.org