> Is there a chance that H2 will be persisted on GAE?

If someone implements all the Java IO classes and methods required
using the App Engine Datastore rather than a real filesystem then it
can happen.  It shouldn't be too hard but I have no idea what the
overhead would be like of using Datastore tables and records as
essentially a block device.  All the readers and writers in the Java
IO classes can just move on to the next Datastore record to get data
or more space as new bytes are written.  Chaining up the sequence of
all those records and associating them with "file" and "directory"
names is the only tricky part.  That and keeping the "files"
unfragmented which I guess might not be too hard.

Maybe there are some esoteric userspace file systems from projects
like FUSE or Linux in general that can reveal the proper algorithms
for this type of storage wrapper.

Regards,

McKinley
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