vrann edited a comment on pull request #5065:
URL: https://github.com/apache/openwhisk/pull/5065#issuecomment-790240892


   @bdoyle0182 @rabbah I have few more questions regarding the upgrade.
   1. Upgrade to 2.6.x brings also the usage of artery for the networking. Per 
akka documentation, when upgrading live systems, if you can't stop the cluster, 
upgrade should happen in two stages: first -- upgrade to 2.6 with Artery 
disabled and 2nd -- enable artery. I think this is what you @bdoyle0182 also 
mentioned? How do we want to proceed with it in this PR? I can see one option 
is to have first PR with artery disabled released in the minor version and then 
another PR which enables artery to release in patch version. In this way you 
can perform two-step upgrade on your end. But looking into release history of 
the openwhisk I'm not sure what is the general strategy towards releases, would 
it be really something community would use.
   2. I have strange issue with the Java Flight Recorder. It complains for the 
missing class in classpath -- NoClassDefFoundError: jdk.jfr.Event. I disabled 
flight recording in the akka and now it works, but would appreciate any comment 
on the better fix. I understand that JFR being proprietary tool might not exist 
on my image, but why would it then be expected to be present in the classpath 
by akka?


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