startstop does not thread the restart process, it needs to

[paulf]

Since startstop is not multithreaded for handling messages, any restart action where a wait() is called for a module results in startstop hanging (not responding to status requests etc) that make users think EW is dead.

There needs to be a queueing of messages that startstop handles and a thread to handle restart tasks which could take some time.

[scott]

Restarts now executed in their own thread