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Posted to issues@flink.apache.org by "lixiang (Jira)" <ji...@apache.org> on 2022/08/23 02:22:00 UTC

[jira] [Commented] (FLINK-28962) Constant memory usage increase

    [ https://issues.apache.org/jira/browse/FLINK-28962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17583297#comment-17583297 ] 

lixiang commented on FLINK-28962:
---------------------------------

I have the same problem. When I replace the delivery guarantee EXACTLY_ONCE with AT_LEAST_ONCE, it looks normal. The speed of memory increase is related to the checkpoint interval and parallelism. 

> 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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