Watch events don't emit when it creates a directory in the course of creating a record

[carltonwhitehead]

Steps to repeat issue:

1. Given a database with an entity definition calling for records stored in a subfolder, ie { "widgets" / id + ".json" }
2. Initialize the database into an empty folder. Crucially, the subfolder for the entities must not exist, ie widgets/
3. On the resource for the entity, watch() to observe changes
4. Instantiate an instance of the entity and pass it to the resource's create(E) method

Expected results:
The watch observer emits an event indicating the entity exists

Actual results:
The watch observer doesn't emit anything

[carltonwhitehead]

This bug affects Linux. Not sure about other OS.

I suspect it might be caused by the JVM's underlying use of inotify on Linux to support filesystem watches. From the inotify man page:

If monitoring an entire directory subtree, and a new subdirectory is created in that tree, be aware that by the time you create a watch for the new subdirectory, new files may already have been created in the subdirectory. Therefore, you may want to scan the contents of the subdirectory immediately after adding the watch.