Gyula Fora created FLINK-34311:
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Summary: Do not change min resource requirements when rescaling
for adaptive scheduler
Key: FLINK-34311
URL: https://issues.apache.org/jira/browse/FLINK-34311
Project: Flink
Issue Type: Improvement
Components: Kubernetes Operator
Reporter: Gyula Fora
Assignee: Gyula Fora
Fix For: kubernetes-operator-1.8.0
when applying the rescale api to change parallelism we should not change the
min parallelism.
The problem currently is that if we cannot aquire the new resources within
{{jobmanager.adaptive-scheduler.resource-wait-timeout}} the job will completely
fail
The {{jobmanager.adaptive-scheduler.resource-stabilization-timeout}} still
allows us to wait for quite long if necessary to get the target parallelism but
failing completely because of the wait timeout seems very unfortunate
It's best to keep the min resources unchanged and let the adaptive scheduler
take care of the parallelism changes together with the timeout settings.
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