Upgrade Issue from 2.4.8 to 2.8.8 (again)

[dan]

Hey Guys, I have a MangoES box here that I've been struggling to upgrade successfully to 2.8.8.
It performed the upgrade after I followed the manual upgrade instructions. It upgraded the modules etc successfully, but when it went to start up I get the following error...

INFO  2018-12-08 19:58:29,138 (com.serotonin.m2m2.db.upgrade.DBUpgrade.checkUpgrade:36) - Starting instance with core version 2.8.8, db 13


INFO  2018-12-08 19:58:32,107 (com.serotonin.m2m2.rt.RuntimeManager.initialize:141) - Starting 1 Publishers...
INFO  2018-12-08 19:58:32,108 (com.serotonin.m2m2.rt.RuntimeManager.initialize:143) - Starting publisher: Alerts
INFO  2018-12-08 19:58:32,108 (com.serotonin.m2m2.rt.RuntimeManager.initialize:153) - 1 Publisher's started in 25ms
ERROR 2018-12-08 19:58:33,397 (com.serotonin.m2m2.Lifecycle.fullyInitializeWebContext:971) -
java.lang.NullPointerException
        at com.serotonin.m2m2.Lifecycle.fullyInitializeWebContext(Lifecycle.java:967)
        at com.serotonin.m2m2.Lifecycle.initialize(Lifecycle.java:324)
        at com.serotonin.m2m2.Main.main(Main.java:115)
ERROR 2018-12-08 19:58:33,407 (com.serotonin.m2m2.Main.main:119) - Error during initialization
java.lang.NullPointerException
        at com.serotonin.m2m2.Lifecycle.configureStartupDwr(Lifecycle.java:1023)
        at com.serotonin.m2m2.Lifecycle.fullyInitializeWebContext(Lifecycle.java:974)
        at com.serotonin.m2m2.Lifecycle.initialize(Lifecycle.java:324)
        at com.serotonin.m2m2.Main.main(Main.java:115)
INFO  2018-12-08 19:58:33,408 (com.serotonin.m2m2.Lifecycle.terminate:353) - Mango Lifecycle terminating...
INFO  2018-12-08 19:58:33,438 (com.serotonin.m2m2.rt.maint.BackgroundProcessing.joinTermination:373) - All medium priority tasks exited gracefully.
INFO  2018-12-08 19:58:33,439 (com.serotonin.m2m2.rt.maint.BackgroundProcessing.joinTermination:378) - All low priority tasks exited gracefully.
INFO  2018-12-08 19:58:33,890 (com.serotonin.m2m2.Lifecycle.terminate:453) - Mango Lifecycle terminated.

Then the mango daemon just keeps restarting looping. I've had similar problems before and had to delete all the stuff in overrides/lib, I tried that in this instance and it still stops at starting publishers...

Is there anything that jumps out at you in this log that I'm missing?

Cheers
Dan

[phildunlap]

Hi Dan,

The old threads were these, I believe, https://forum.infiniteautomation.com/topic/3749/mango-using-100-cpu and https://forum.infiniteautomation.com/topic/2308/upgrade-to-latest-version-wont-startup

I've not tracked down exactly what causes that stack trace, if indeed it is only caused by one thing. It can usually be resolved by one of,

1. Start on clean database and restore a backup
2. Ensure there are no overrides in the classes or overrides folders
3. Update Java
4. Reinstall Mango

There may be another stack trace making it to stderr, which you could try to launch Mango on the command like to see that output.

[dan]

Hey Phil, thanks for that.
I'll give it a go on a clean installation.

Cheers
Dan