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Posted to issues@flink.apache.org by "vinoyang (JIRA)" <ji...@apache.org> on 2019/07/10 03:05:00 UTC
[jira] [Assigned] (FLINK-11148) Rescaling operator regression in
Flink 1.7
[ https://issues.apache.org/jira/browse/FLINK-11148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
vinoyang reassigned FLINK-11148:
--------------------------------
Assignee: (was: vinoyang)
> 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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