1. I use the filesystem as the state backend, and the state should be in memory.

2. The mini-batch function is disabled.

3. Does mini-batch reduce memory usage? I found that the memory usage of the 
overwindows grew fast and the JVM FunllGC was frequent. Tenured Gen occupies a 
large amount of memory.

[cid:image003.jpg@01D7878E.70F3CA50]



On 2021/08/02 02:13:18, Caizhi Weng <t...@gmail.com<mailto:t...@gmail.com>> 
wrote:

> Hi!>

>

> As the state grows the processing speed will slow down a bit. Which state>

> backend are you using? Is mini batch enabled[1]?>

>

> [1]>

> https://ci.apache.org/projects/flink/flink-docs-master/docs/dev/table/config/#table-exec-mini-batch-enabled>

>

> Wanghui (HiCampus) <wa...@huawei.com<mailto:wa...@huawei.com>> 于2021年7月30日周五 
> 下午3:59写道:>

>

> > Hi :>

> >>

> > When I use Over Window Aggregation,windows size is 1 hour,I find the>

> > processing speed decreases over time. How can I tuning the over window?>

> >>

> > Best regards>

> >>

> > Hui Wang>

> >>

> >>

> >>

>

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