Hi Zhijiang,
        Because I want to know the current and the trend of backpressure status 
in Flink Job. Like other index such as latency, I can monitor it, and show it 
in graph by getting data from metric. Now using the metric to get the 
backpressure data is the simplest way I can think.

Best
Henry

> 在 2019年4月15日,上午10:34,zhijiang <wangzhijiang...@aliyun.com> 写道:
> 
> Hi Henry,
> 
> The backpressure tracking is not realized in metric framework, you could 
> check the details via [1]. I am not sure why your requirements is showing 
> backpressure in metrics.
> 
> [1] 
> https://ci.apache.org/projects/flink/flink-docs-release-1.8/monitoring/back_pressure.html
> 
> Best,
> Zhijiang
> 
>  ------------------------------------------------------------------
> From:徐涛 <happydexu...@gmail.com>
> Send Time:2019年4月15日(星期一) 10:19
> To:user <user@flink.apache.org>
> Subject:Can back pressure data be gathered by Flink metric system?
> 
> Hi Experts,
> From the page Flink metric 
> system(https://ci.apache.org/projects/flink/flink-docs-release-1.8/monitoring/metrics.html#system-metrics
>  
> <https://ci.apache.org/projects/flink/flink-docs-release-1.8/monitoring/metrics.html#system-metrics>),
>  I do not find the info about the back pressure. I want to get the 
> backpressure data and plot it, but I do not know how to get it via metric. 
> Can anybody help me about it? Thanks a lot.
> 
> Best
> Henry
> 

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