releaseExternalResources and akka.pattern.AskTimeoutException in multi-threaded environment about parallec HOT 3 CLOSED

@sebastianthelen thanks so much for trying Parallec. As mentioned in the javadoc please not to call this releaseExternalResources() until you stop using Parallec.

If you are on some web server (such as Tomcat) and runs parallec jobs as cron jobs. We do not need to call this line at all. We have several production application that runs as web server. We do not call it in our app.

The actor system and the threadpools are live so that it will keep reusing the same one. The resources used are not significant either. Feel free to use tools such as VirtualVM to track the heap usage etc.

releaseExternalResources
public void releaseExternalResources()
Releases the external resources that this object depends on. You should not call this method if you still want to use the external resources (e.g. akka system, async http client store, thread pool for SSH/TCP) are in use by other objects.

from parallec.

@jeffpeiyt thanks for your prompt reply.

If you are on some web server (such as Tomcat) and runs parallec jobs as cron jobs. We do not need to call this line at all.

That's exactly what we were not sure of. We have read the javadocs for releaseExternalResources() but were not sure if this also applies in the web server scenario.

The actor system and the threadpools are live so that it will keep reusing the same one.

Understood. We also tracked the heap usage with VirtualVM and everything looked ok.

Again, thanks for clarifying.

from parallec.

@sebastianthelen Glad that it helped. Thanks for your questions, we will enhance the doc on this. Guess other people will have similar questions.

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