Hello folks, I found a reason why *IgniteSemaphoreExample* hangs when started twice without restarting a cluster; and it doesn't seem minor to me anymore.
>From here I'm going to refer to example's code so please have it opened. So, when the first instance of node running example code finishes and leaves the cluster, synchronization semaphore named "IgniteSemaphoreExample" goes to broken state on all other cluster nodes. If I restart example without restarting all nodes of the cluster, final *acquire *call on the semaphore on client side hangs because all other nodes treat it as broken and don't increase permits with their *release *calls on it. There is an interesting comment inside its *tryReleaseShared* implementation (BTW it is implemented in *GridCacheSemaphoreImpl*): "// If broken, return immediately, exception will be thrown anyway. if (broken) return true;" It seems that no exceptions are thrown neither on client side calling *acquire *or on server side calling *release *methods on a broken semaphore. Does anybody know why it behaves in that way? Is it expected behavior at all and if yes where is it documented? Thanks, Sergey Chugunov.
