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https://issues.apache.org/jira/browse/FLINK-31396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuxin Tan updated FLINK-31396:
------------------------------
    Affects Version/s: 1.18.0

> Occasional inaccurate timeout time calculation with System.nanotime in batch 
> read buffer pool
> ---------------------------------------------------------------------------------------------
>
>                 Key: FLINK-31396
>                 URL: https://issues.apache.org/jira/browse/FLINK-31396
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Network
>    Affects Versions: 1.18.0
>            Reporter: Yuxin Tan
>            Priority: Major
>
> When running TPC-DS tests, I encountered the read buffer request timeout 
> because of configuring too less read buffers. But I found the timeout time 
> may be less than 5m occasionally, 5m is the expected time. 
> I read the docs of System.nanotime, the docs say that  t1 < t0 should not be 
> used, because of the possibility of numerical overflow. I tested the 
> System.currentTimeMillis and it can work as expected.



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