On Mon, 2010-05-17 at 15:08 +0530, Supun Kamburugamuva wrote: > On Sun, May 16, 2010 at 2:41 PM, Oleg Kalnichevski <ol...@apache.org> wrote: > > > On Sun, 2010-05-16 at 10:16 +0530, Supun Kamburugamuva wrote: > > > Hi Oleg, > > > > > > A quick question. In this system we have two IO dispatchers. Only > > > one dispatcher is blocked. But all the workers are waiting on a lock > > > unlocked by the dispatchers. If one dispatcher is blocked, what happen to > > > the other dispatcher? Is it going to work normally? > > > > > > > No, it is not. A dispatch thread can be responsible for selecting I/O > > events for many non-blocking channels. If the tread gets stuck, all its > > connections become blocked. For example, if you have 2 dispatch threads > > and one gets stuck, 50% of open connections are dead. > > > > To be more clear I will as the question in a different way, > > Lets say a dispatcher thread gets blocked and there are some consumer > threads working on the connections processed by this dispatcher. Now the > dispatcher is blocked and consumers are waiting for a event fired by a > dispatcher to continue. > > Do you say that the consumers will block fore-ever because this particular > dispatcher is blocked even though there is another dispatcher running in the > system. >
Yes, they will. Blocked dispatch thread spells big trouble. Oleg --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@hc.apache.org For additional commands, e-mail: dev-h...@hc.apache.org
