[infinispan-dev] JGroupsDistSync and ISPN-83

[Vladimir Blagojevic]

On 11-05-11 11:23 AM, Dan Berindei wrote:
> If ReentrantReadWriteLock would allow upgrades then you would get a
> deadlock when two threads both hold the read lock and try to upgrade
> to a write lock at the same time.
> There's always a trade-off...
>
> I'm not familiar with the code, but are you sure the read lock is
> being held by the same thread that is trying to acquire the write
> lock?
>

Not sure and it sounds counter intuitive that a thread holding a read 
lock from cluster invocation is doing state generation for state 
transfer as well. But this lock business is fishy and I plan to get to 
the bottom of it...