Comment #2 on issue 39 by idaroglou: EpisodeLogger in RLVizLib opens lots  
of files.
http://code.google.com/p/rl-viz/issues/detail?id=39

I think I've found the culprit:

private void makeTheFile() {
         try {
             theLogFile = File.createTempFile("episode", "log");

             //**** you should probably call: theLogFile.close()  here..

             //Make sure the file doesn't outlive the program's life
             theLogFile.deleteOnExit();
         } catch (IOException ex) {
             System.err.println("Error ::was unable to create temporary log  
file in
EpisodeLogger. Suppressing further log messages after Exception printout.");
             System.err.println(ex);
             failedWithError = true;
         }

I'm not quite sure whether File.createTempFile closes the newly generated  
file
descriptor, but in case it doesn't, that's what might explain why the  
system runs out
of available file descriptors (too many open files).

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