[ https://issues.apache.org/jira/browse/FLINK-18357 ]


    Stephan Ewen deleted comment on FLINK-18357:
    --------------------------------------

was (Author: flink-jira-bot):
This major issue is unassigned and itself and all of its Sub-Tasks have not 
been updated for 30 days. So, it has been labeled "stale-major". If this ticket 
is indeed "major", please either assign yourself or give an update. Afterwards, 
please remove the label. In 7 days the issue will be deprioritized.

> ContinuousFileReaderOperator checkpoint timeout when files and directories 
> get larger
> -------------------------------------------------------------------------------------
>
>                 Key: FLINK-18357
>                 URL: https://issues.apache.org/jira/browse/FLINK-18357
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / DataStream
>            Reporter: Jark Wu
>            Priority: Not a Priority
>              Labels: auto-deprioritized-major, auto-deprioritized-minor
>
> This is reported from user-zh, I tranlsated it into this issue: 
> http://apache-flink.147419.n8.nabble.com/env-readFile-td4017.html
> {{env.readFile(format,path, FileProcessingMode.PROCESS_CONTINUOUSLY, 60000)}}
> It monitors a directory of A, we will generate a new directory under A every 
> day, such as:
> A/20200101/
> A/20200102/
> A/20200103/
> .......
> .......
> However, as time goes on, it has to monitor 200 directories and 500 files in 
> each directory until June. Then everytime, the checkpoint has to synchronize 
> offsets of 200*500 files which is very large and checkpoint gets timeout. 
> ========================================================
> My though is that is it possible to have a configuration, to mark a 
> sub-directory as idle after a inactive interval, then we don't need to 
> checkpoint all the file offsets under it. 



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