Hello, I want to make ticket IGNITE-4365 <https://issues.apache.org/jira/browse/IGNITE-4365>. The problem came from DataStreamerImpl. There are methods which use DataStreamerImpl under the lock (GridCacheGateway), but the method DataStreamerImpl#doFlush() has a "while(true)" loop. And in case when someone is calling the GridCacheGateway#onStopped(), application can get stuck in the loop in DataStreamerImpl#doFlush(), and in trying get a lock in GridCacheGateway#onStopped().
So I need an expert opinion about DataStreamerImpl#doFlush(). 1) Can I just drop unfinished futures in DataStreamerImpl#doFlush() when someone is calling GridCacheGateway#onStopped()? I can track it by adding a volatile boolean flag in the GridCacheGateway. 2) Or better to modify a futures execution DataStreamerImpl#load0() to use onDone with an exception or something like that? Methods which use or might use DataStreamerImpl under the lock: 1) GridCacheAdapter#localLoad() 2) GridCacheAdapter#localLoadAndUpdate() 3) GridCacheAdapter#localLoadCache() 4) GridDistributedCacheAdapter.GlobalRemoveAllJob#localExecute() (it exectly happen in thread dump in ticket)