[storm] Can't get the disconnection tests to run

[Jason Baker]

Hey guys,

I've been trying to split out a branch that contains the oracle backend
that's up-to-date from trunk.  For whatever reason, I can't get the
disconnection tests to work.  I've been running the tests two ways:

 1. Using an Oracle TNS name (which looks up the hostname/port in a file).
 In other words, a URI like this:

    oracle://username:password@tns_name?tns=True

 2. Specifying the port, hostname, and service identifier in the URI.  The
URI looks like this:

    oracle://username:password@hostname:port/SID

Using both methods, I can get both the database tests and store tests to
work.  However, I can't get the disconnection tests to pass.

If I use #1, then the test just fails; a DisconnectError doesn't get raised.
 It doesn't even appear that is_disconnect_error is ever getting called.  If
I use #2, the test just hangs.  After doing some debugging, I've determined
that it is getting hung up at this line of code in the proxy:

    rlist, wlist, xlist = select.select(readers, [], [], TIMEOUT)

...which is strange because as far as I know, this shouldn't block.

It makes sense that #1 would fail as the proxy server likely doesn't have
anything to connect to.  However, I can't figure out why it's getting hung
up.  Any ideas as far as where to begin?  Could something be configured
incorrectly?  Does this sound like a non-storm issue (in other words, an
Oracle issue)?
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