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https://issues.apache.org/jira/browse/FLINK-10158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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aitozi closed FLINK-10158.
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Resolution: Duplicate
> The DataOutputSerializer may consume excessive memory
> -----------------------------------------------------
>
> Key: FLINK-10158
> URL: https://issues.apache.org/jira/browse/FLINK-10158
> Project: Flink
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.4.2, 1.5.2, 1.6.0
> Reporter: aitozi
> Assignee: aitozi
> Priority: Major
>
> I found that the dataOutputSerializer clear the intermediate buffer when the
> buffer exceed the 5M (as a fixed configuration)， But when we encountered the
> rebalance or keyByPartition and the downstream has a large parallel it will
> also consume a lot memory, we can do two things :
> 1. make this config configurable
> 2. like the https://issues.apache.org/jira/projects/FLINK/issues/FLINK-1326
> mentioned, we can make the serializer one for the output
> What's your idea ? [~StephanEwen]
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