Could not connect to Data Science Studio server

[gregv]

Hello,

I installed DSS on a mac, OS Yosemite 10.10.15.

While starting DSS, the chrome browser open an empty page with the following text :

"Could not connect to Data Science Studio server

Please check if DSS server is running.

Unknown error

HTTP code: 502, type: Gateway error"

I got no firewall on. DSS have been uninstalled 3 times.

Thanks in advance for your help.

Grégory

[jereze]

It may take some time for DSS to load. Have you tried again after few minutes?

[gregv]

Well I waited a very long time, and tried again and again but it keeps giving me the same message.

[jereze]

OK. So there is a problem somewhere. We would need the logs in order to help you. Could you open a ticket on our support page (link in the right column)? Please attach the logs that you have in this folder: ~/Library/DataScienceStudio/dss_home/run/ (where ~ is the home folder of your user). Thanks.

[gregv]

done, thanks for your help.

[mklybor]

there is an incompatibility issue with the startup scripts and recent JVMs (I am using 11), regarding logging of garbage collection events.

without knowing all of the details, I fixed the problem by hacking the script "java.py" in

/Applications/DataScienceStudio.app/Contents/Resources/kit/scripts/dkuinstall

and disable:

# if addGCLogging and jvm[0] in [ "hotspot", "openjdk" ]:

# if jvm[1] >= 9:

# ret += " -Xlog:gc,gc+cpu=info:stderr:t,um,l,ti,tg"

# elif gc == "g1":

# # G1 on Java 8 is very very verbose, so don't print GC details

# ret += " -Xloggc:/dev/stderr -XX:+PrintGCTimeStamps"

# else:

# ret += " -Xloggc:/dev/stderr -XX:+PrintGCDetails -XX:+PrintGCTimeStamps"

[Clément_Stenac]

Hi,

Nice work 🙂 We confirm that Java 11 is not yet supported. Support is upcoming in the next DSS release.

[ganesh3]

Is there an update to DSS? I am facing the same issue when I install DSS on Windows using linux sub system - Ubuntu and I am unable to locate java.py with the above content in order to disable them.