Re: Backpressure handling in FileSource APIs - Flink 1.16
Hi Kamal, The network buffer will be full for specific `FileSource` when the job has back pressure which will block the source subtask. You can refer to network buffer [1] for more information. [1] https://flink.apache.org/2019/06/05/a-deep-dive-into-flinks-network-stack/ Best, Shammon FY On Fri, May 26, 2023 at 7:13 PM Kamal Mittal wrote: > Hello Shammon, > > Can you please point out the classes where like for "FileSource" slow down > logic is placed? > > Just wanted to understand it more better and try it at my end by running > various perf. runs, also apply changes in my application if any. > > Rgds, > Kamal > > On Thu, May 25, 2023 at 9:16 AM Kamal Mittal wrote: > >> Hello Shammon, >> >> Can you please point out the classes where like for "FileSource" slow >> down logic is placed? >> >> Just wanted to understand it more better and try it at my end by running >> various perf. runs, also apply changes in my application if any. >> >> Rgds, >> Kamal >> >> On Wed, May 24, 2023 at 11:41 AM Kamal Mittal wrote: >> >>> Thanks Shammon for clarification. >>> >>> On Wed, May 24, 2023 at 11:01 AM Shammon FY wrote: >>> >>>> 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 >>>> 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, >>>>> wrote: >>>>> >>>>>> Added Flink community DL as well. >>>>>> >>>>>> -- Forwarded message - >>>>>> From: Kamal Mittal >>>>>> Date: Tue, May 23, 2023 at 7:57 AM >>>>>> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >>>>>> To: Shammon FY >>>>>> >>>>>> >>>>>> 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 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 >>>>>>> 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 >>>>>>>> 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 >>>>>>>>> >>>>>>>>
Re: Backpressure handling in FileSource APIs - Flink 1.16
Hello Shammon, Can you please point out the classes where like for "FileSource" slow down logic is placed? Just wanted to understand it more better and try it at my end by running various perf. runs, also apply changes in my application if any. Rgds, Kamal On Thu, May 25, 2023 at 9:16 AM Kamal Mittal wrote: > Hello Shammon, > > Can you please point out the classes where like for "FileSource" slow down > logic is placed? > > Just wanted to understand it more better and try it at my end by running > various perf. runs, also apply changes in my application if any. > > Rgds, > Kamal > > On Wed, May 24, 2023 at 11:41 AM Kamal Mittal wrote: > >> Thanks Shammon for clarification. >> >> On Wed, May 24, 2023 at 11:01 AM Shammon FY wrote: >> >>> 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 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, wrote: >>>> >>>>> Added Flink community DL as well. >>>>> >>>>> -- Forwarded message - >>>>> From: Kamal Mittal >>>>> Date: Tue, May 23, 2023 at 7:57 AM >>>>> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >>>>> To: Shammon FY >>>>> >>>>> >>>>> 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 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 >>>>>> 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 >>>>>>> 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 >>>>>>>> >>>>>>>
Re: Backpressure handling in FileSource APIs - Flink 1.16
Hello Shammon, Can you please point out the classes where like for "FileSource" slow down logic is placed? Just wanted to understand it more better and try it at my end by running various perf. runs, also apply changes in my application if any. Rgds, Kamal On Wed, May 24, 2023 at 11:41 AM Kamal Mittal wrote: > Thanks Shammon for clarification. > > On Wed, May 24, 2023 at 11:01 AM Shammon FY wrote: > >> 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 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, wrote: >>> >>>> Added Flink community DL as well. >>>> >>>> -- Forwarded message - >>>> From: Kamal Mittal >>>> Date: Tue, May 23, 2023 at 7:57 AM >>>> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >>>> To: Shammon FY >>>> >>>> >>>> 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 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 >>>>> 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 >>>>>> 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 >>>>>>> >>>>>>
Re: Backpressure handling in FileSource APIs - Flink 1.16
Thanks Shammon for clarification. On Wed, May 24, 2023 at 11:01 AM Shammon FY wrote: > 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 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, wrote: >> >>> Added Flink community DL as well. >>> >>> -- Forwarded message - >>> From: Kamal Mittal >>> Date: Tue, May 23, 2023 at 7:57 AM >>> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >>> To: Shammon FY >>> >>> >>> 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 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 >>>> 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 >>>>> 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 >>>>>> >>>>>
Re: Backpressure handling in FileSource APIs - Flink 1.16
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 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, wrote: > >> Added Flink community DL as well. >> >> -- Forwarded message - >> From: Kamal Mittal >> Date: Tue, May 23, 2023 at 7:57 AM >> Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 >> To: Shammon FY >> >> >> 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 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 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 >>>> 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 >>>>> >>>>
Re: Backpressure handling in FileSource APIs - Flink 1.16
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, wrote: > Added Flink community DL as well. > > -- Forwarded message - > From: Kamal Mittal > Date: Tue, May 23, 2023 at 7:57 AM > Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 > To: Shammon FY > > > 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 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 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 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 >>>> >>>
Fwd: Backpressure handling in FileSource APIs - Flink 1.16
Added Flink community DL as well. -- Forwarded message - From: Kamal Mittal Date: Tue, May 23, 2023 at 7:57 AM Subject: Re: Backpressure handling in FileSource APIs - Flink 1.16 To: Shammon FY 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 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 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 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 >>> >>
Re: Backpressure handling in FileSource APIs - Flink 1.16
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 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 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 >> >
Re: Backpressure handling in FileSource APIs - Flink 1.16
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 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 >
Backpressure handling in FileSource APIs - Flink 1.16
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
