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https://issues.apache.org/jira/browse/FLINK-11148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann closed FLINK-11148.
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Resolution: Duplicate
> Rescaling operator regression in Flink 1.7
> ------------------------------------------
>
> Key: FLINK-11148
> URL: https://issues.apache.org/jira/browse/FLINK-11148
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.7.0
> Reporter: Truong Duc Kien
> Priority: Major
>
> We have a job using 20 TaskManager with 3 slot each.
> Using Flink 1.4, when we rescale a data stream from 60 to 20, each
> TaskManager will only have one downstream slot, that receives the data from 3
> upstream slots in the same TaskManager.
> Using Flink 1.7, this behaviour no longer hold true, multiple downstream
> slots are being assigned to the same TaskManager. This change is causing
> imbalance in our TaskManager load.
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