Hi !
I would like your advice about an proposing I was going to create on
Jira when I realised that I might be completely wrong ^.^
So, the context is that, with [HADOOP-3421] speaking about sharing a
cluster among more than one organization (so potentially with
non-cooperative users), and posts here speaking about virtualization and
the ability of re-using the TaskTracker's VM to run new tasks, I told
myself that it could be useful to choose the way TaskRunners run their
children.
More specifically, it could be useful to at least provide a way to
imprison a Task in its working directory, or in a virtual machine.
The usefulness of sharing the TaskTracker VM seems more arguable, but it
might still be interesting.
So I started writing a prototype, by extracting and generalizing parts
of the TaskRuner, like I tried before with the JobTracker. But then I
realized that, if we don't need more than imprisoning, it could be much
easier to just provide a class inheriting of ShellCommandExecutor that
would run its commands in a sandbox.
So I am asking for your opinions if my first idea was a good one, or if
I should re-work the second one... or drop both :-P
Thanks !
Brice
PS: I already posted that, but I think that it get lost in a lot of mail
sent by Jira :-P Sorry for the noise.
