The recent update of Java to 8u242 on Ubuntu breaks execution of workflows using RMI executors (which still is the default execution mode right now). We have identified the problem and are currently working on a fix and will release it as soon as possible. Until then please don’t update Java if possible! If you already updated and your server isn’t working any more, downgrade to the previous version (everything before 8u241 will work).
- On Windows uninstall the current version and install a previous one. If you still have that installed you can also simply change the path to the JRE in the service.
- On Ubuntu first determine what previous version is available using
apt-cache showpkg openjdk-8-jdk-headless
. This usually outputs the currently installed version and at least one previous version, e.g. 8u242-b08-0ubuntu3~18.04 and 8u162-b12-1. Take the lower version and install it explicitly usingapt install openjdk-8-jdk=8u162-b12-1 openjdk-8-jdk-headless=8u162-b12-1 openjdk-8-jre-headless=8u162-b12-1 openjdk-8-jre=8u162-b12-1
or similar. - For RHEL/CentOS the affected Java version isn’t available yet. In case you read this post after you have updated to the affected Java version you can downgrade using
yum downgrade java-1.8.0-openjdk-1.8.0.232.b09
or similar.