[SOLVED] fast scala compiler: Unable to establish connection to compilation daemon

fast scala compiler: Unable to establish connection to compilation daemon

I have a ubuntu machine under OpenVZ virtualization. When I run fsc test.scala I get:

Unable to establish connection to compilation daemon

Then ps aux shows me lots of processes that look like this

ren      17482  0.0  0.0   4908  1400 pts/0    S    00:29   0:00 /bin/bash --posix /usr/bin/scala -Djava.net.preferIPv4Stack=true scala.tools
ren      17490  0.2  0.5 1246676 24268 pts/0   Sl   00:29   0:00 java -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv4Stack=true -Xbootc

Edit:

Found this, so:

selinux is not installed
export | grep SCALA doesn't return anything, however scalac and scala compiling/running fine so I assume this step is ok
ping localhost - works
fsc -reset - same error
fsc -verbose >> logfile.log 2>&1 produces this:

Fast Scala compiler version 2.9.2 -- Copyright 2002-2011, LAMP/EPFL
[Given arguments: -verbose]
[Transformed arguments: -verbose -current-dir /home/ren]
[VM arguments: ]
[Temp directory: /tmp/scala-devel/ren]
[Port number: 36737]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 36737 failed; re-trying...]
No compile server running: starting one with args ''
[Executing command: scala scala.tools.nsc.CompileServer -v]
Starting CompileServer on port 34962
Redirect dir is /tmp/scala-devel/ren/output-redirects
[Port number: 34962]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 34962 failed; re-trying...]
[Port number: 34962]
java.net.SocketException: Invalid argument or cannot assign requested address
[Connecting to compilation daemon at port 34962 failed; re-trying...]
No compile server running: starting one with args '' and so on ...

Edit 2:

Well, starting compilation server like this scala scala.tools.nsc.CompileServer -v actually works! And it seems fsc did start all those servers, but for some reason it decided it didn't. fsc -server localhost:port test.scala works. Which is good enough for now.

Solution

It seems fsc uses hostname to connect to compilation server. My hostname didn't response to ping. Changing it to localhost in /etc/hostname fixed the problem.