cool! HybridSource seems much close to my requirements.
Thanks Dawid. I will have a try.
Shawn
------------------------------------------------------------------
Sender:Dawid Wysakowicz <[email protected]>
Sent At:2022 Jan. 26 (Wed.) 15:49
Recipient:user <[email protected]>
Subject:Re: create savepoint on bounded source in streaming mode
Hi Shawn,
You could also take a look at the hybrid source[1]
Best,
Dawid
[1]https://nightlies.apache.org/flink/flink-docs-master/docs/connectors/datastream/hybridsource/
On 26/01/2022 08:39, Guowei Ma wrote:
Hi Shawn
Currently Flink can not trigger the sp at the end of the input. An alternative
way might be that you need to develop a customized source, which triggers a
savepoint when it notices that all the input split has been handled.
Or you could see the state process api[1], which might be helpful.
Thanks for your sharing but I have another little question:
I think you need to process all the historical events to rebuild the correct
state. So there might be no gain even if you periodically create a savepoint.
So why did you need to "rebuild" the state periodically? Do I miss something?
[1]
https://nightlies.apache.org/flink/flink-docs-release-1.14/docs/libs/state_processor_api/
Best,
Guowei
On Wed, Jan 26, 2022 at 2:17 PM Shawn Du <[email protected]> wrote:
our application is stateful. processing live events depends on the
state. but for kinds of reason, we need rebuild the state. it will be very
costly to replay all data.
our historical events data are stored in s3. so we want to create
states/savepoints periodically so that we can rebuild the state from a point.
we call this as a bootstrap process.
any ideas?
Thanks.
------------------------------------------------------------------
Sender:Guowei Ma <[email protected]>
Sent At:2022 Jan. 26 (Wed.) 14:04
Recipient:Shawn Du <[email protected]>
Cc:user <[email protected]>
Subject:Re: create savepoint on bounded source in streaming mode
Hi, Shawn
I think Flink does not support this mechanism yet.
Would you like to share the scenario in which you need this savepoint at the
end of the bounded input?
Best,
Guowei
On Wed, Jan 26, 2022 at 1:50 PM Shawn Du <[email protected]> wrote:
Hi experts,
assume I have several files and I want replay these files in order in streaming
mode and create a savepoint when files play at the end. it is possible?
I wrote a simple test app, and job are finished when source is at the end. I
have no chance to creat a savepoint. please help.
Thanks
Shawn
