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https://issues.apache.org/jira/browse/FLINK-28962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17584573#comment-17584573
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lixiang commented on FLINK-28962:
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thanks, I think this is the reason for the problem I'm having.:)

> Constant memory usage increase
> ------------------------------
>
>                 Key: FLINK-28962
>                 URL: https://issues.apache.org/jira/browse/FLINK-28962
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kafka, kafka
>    Affects Versions: 1.15.0, 1.15.1
>            Reporter: zhangdong7
>            Priority: Blocker
>
> Basically I'm running flink at the 1.15.1 version with docker  and often the 
> application start to slow down because of OOM errors. 
> It was observed that the memory continued to increase, and the number of 
> threads continued to increase through the mertics data collected by 
> Prometheus。
> I tried to remove the sink kafka code and it looks normal,so I change the 
> flink to 1.14.5 and it works fine.
> Is this a bug?



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