Rui Fan created FLINK-35814:
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Summary: Don't scale up continuously when the throughout cannot be
increased after scaling up
Key: FLINK-35814
URL: https://issues.apache.org/jira/browse/FLINK-35814
Project: Flink
Issue Type: Improvement
Components: Autoscaler
Reporter: Rui Fan
Assignee: Rui Fan
h2. Motivation
Currently, the parallelism will be increased continuously when some cases
happen. Such as: data skew, bottleneck occurs in other system.
In these cases, the throughout(processing rate) cannot be increased even if we
increase the parallelism.
h2. Solution
We don't need to scale up the task continuously when the throughout cannot be
increased after scaling up.
And it's better to trigger some events to reminder users fix the issue manually.
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