Github user aljoscha commented on the issue:
This PR disables `RescalingITCase` because the timers are checkpointed
using the legacy/deprecated `StreamCheckpointedOperator` interface.
(`AbstractStreamOperator` implements the interface because it keeps the
timers.) The tests can be reactivated once @kl0u gets in his work on making the
timers key-group aware.
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket