Java's 'Tnameserv' Takes 3+ Minutes to Be "Ready", Why

Java's 'tnameserv' takes 3+ minutes to be Ready , why?

Turns out the problem was a firewall issue. Wireshark didn't show anything useful because the firewall was dropping a certain packet. Although I looked at my firewall logs quite a few times to make sure this wasn't the case, turns out I wasn't looking in the right place. I overlooked the fact that this 'tnameserv' was IPv6 aware (as it was binding to :::23423) and a cursory glance of my firewall script showed that I was logging IPv6 related packets to a different location than my IPv4 packets. This was not an oversight but had to be done because ip6tables does not currently support the -j ULOG target.

Long story short, allowing loopback for IPv6 fixed the issue and 'tnameserv' returns "Ready" almost instantly.

Corba Event Client ETIMEDOUT

I ended up figuring out that since I'm on a different subnet than the server, the ORB as publishing the wrong IP address, and couldn't figure out the route back to my client when an even triggered.

I ended up changing the config file at /etc/omniORB.cfg and changing the value of the "endPointPublish" property to the IP address on the server's subnet!

Shell script hangs, but only when called into a variable or strace

I'm pretty sure the problem is that the shell is capturing output from the /sbin/service script and the solr service it starts, and hence will wait for the service to exit (or at least close its stdout) before continuing. Here's a simple demo:

$ bg_service() { while true; do sleep 10; done; }
$ start_bg_service() { echo "starting"; bg_service& echo "running"; }
$ start_bg_service 
starting
[1] 8656
running
$ var=$(start_bg_service)
[It hangs at this point... until I open another shell and kill the background process]

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