[jetty-users] Webapp started twice??

[John English <john.foreign@xxxxxxxxx>]

I just updated a webapp, and something peculiar happened, and I'm 
wondering if it's normal behaviour. I'm using jetty-9.4.6.v20170531.

In my webapps directory, I have a directory "myapp" and a corresponding 
"myapp.xml". Since this was a major update, I copied "myapp" to 
"myapp.old" and then updated the contents of "myapp". When I tried to 
stop the webapp with"java -jar start.jar --stop", I got this:

java.lang.NullPointerException
	at org.eclipse.jetty.start.Main.stop(Main.java:620)
	at org.eclipse.jetty.start.Main.stop(Main.java:560)
	at org.eclipse.jetty.start.Main.doStop(Main.java:548)
	at org.eclipse.jetty.start.Main.start(Main.java:424)

I killed the webapp by hand and then tried to restart it, but both 
"myapp" and "myapp.old" started. As soon as I moved "myapp.old" 
elsewhere, everything went back to normal: I can now stop it using 
"--stop", and it restarts correctly.

Is it really the expected behaviour?

Thanks,
--
John English

---
This email has been checked for viruses by AVG.
https://www.avg.com