Hi Kamal, The source will slow down when there is backpressure in the flink job, you can refer to docs [1] and [2] to get more detailed information about backpressure mechanism.
Currently there's no API or Callback in source for users to do some customized operations for backpressure, but users can collect the metrics of the job and analysis, for example, the metrics in [1] and [3]. I hope this can help you. [1] https://flink.apache.org/2021/07/07/how-to-identify-the-source-of-backpressure/#:~:text=Backpressure%20is%20an%20indicator%20that,the%20queues%20before%20being%20processed . [2] https://www.alibabacloud.com/blog/analysis-of-network-flow-control-and-back-pressure-flink-advanced-tutorials_596632 [3] https://nightlies.apache.org/flink/flink-docs-master/docs/ops/monitoring/back_pressure/ On Tue, May 23, 2023 at 9:40 PM Kamal Mittal <kspmm...@gmail.com> wrote: > Hello Community, > > Can you please share views about the query asked above w.r.t back pressure > for FileSource APIs for Bulk and Record stream formats. > Planning to use these APIs w.r.t AVRO to Parquet and vice-versa conversion. > > Rgds, > Kamal > > On Tue, 23 May 2023, 12:26 pm Kamal Mittal, <kspmm...@gmail.com> wrote: > >> Added Flink community DL as well. >> >> ---------- Forwarded message --------- >> From: Kamal Mittal <kspmm...@gmail.com> >> Date: Tue, May 23, 2023 at 7:57 AM >> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >> To: Shammon FY <zjur...@gmail.com> >> >> >> Hello, >> >> Yes, want to take some custom actions and also if there is any default >> behavior of slowing down sending data in pipeline further or reading data >> from source somehow? >> >> Rgds, >> Kamal >> >> On Tue, May 23, 2023 at 6:06 AM Shammon FY <zjur...@gmail.com> wrote: >> >>> Hi Kamal, >>> >>> If I understand correctly, do you want the source to do some custom >>> actions, such as current limiting, when there is backpressure in the job? >>> >>> Best, >>> Shammon FY >>> >>> >>> On Mon, May 22, 2023 at 2:12 PM Kamal Mittal <kspmm...@gmail.com> wrote: >>> >>>> Hello Community, >>>> >>>> Can you please share views about the query asked above w.r.t back >>>> pressure for FileSource APIs for Bulk and Record stream formats. >>>> Planning to use these APIs w.r.t AVRO to Parquet and vice-versa >>>> conversion. >>>> >>>> Rgds, >>>> Kamal >>>> >>>> On Thu, May 18, 2023 at 2:33 PM Kamal Mittal <kspmm...@gmail.com> >>>> wrote: >>>> >>>>> Hello Community, >>>>> >>>>> Does FileSource APIs for Bulk and Record stream formats handle back >>>>> pressure by any way like slowing down sending data in piepline further or >>>>> reading data from source somehow? >>>>> Or does it give any callback/handle so that any action can be taken? >>>>> Can you please share details if any? >>>>> >>>>> Rgds, >>>>> Kamal >>>>> >>>>
