[infinispan-dev] Rehashing on leave

[Vladimir Blagojevic]

They probably do get queued up. However, that's orthogonal to the fact that JGroups pushes up views that are more "volatile" than we assumed. For example, if we have view V1={A,B,C,D,E} and massive failure causes {C,D,E} to fail, JGroups failure detection and GMS are going to install a view V2={A,B} to surviving members. LeaveTask does not handle this scenario.

 

On 2010-06-02, at 7:15 AM, Manik Surtani wrote:

> 
> On 27 May 2010, at 20:26, Vladimir Blagojevic wrote:
> 
>> Hey,
>> 
>> Our rehashing tasks assume that only one member at the time can leave (DistributionManagerImpl#rehash) between the subsequent views. JGroups does not enforce this model - i.e multiple members can leave/crash between subsequent views. Unless there is some disconnect that I am not aware of we have to handle multiple leaves/crashes in rehash.
> 
> Don't the LeaveTasks get queued up by the executor?  In which case, multiple leavers are supported, its just that they will be processed one at a time.
> 
>> 
>> Vladimir
>> 
>> 
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> 
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> Manik Surtani
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Vladimir Blagojevic
JBoss Clustering Team
JBoss by Red Hat