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From Robert Metzger <rmetz...@apache.org>
Subject Re: How to cancel a Flink DataSource from the driver code?
Date Thu, 02 Jul 2015 07:47:51 GMT
Hi Arnaud,

when using the PersistentKafkaSource, you can always cancel the job in the
web interface and start it again. We will continue reading from Kafka where
you left off.
You can probably also send the cancel request manually to the web
interface, to that URL:
http://localhost:8081/jobsInfo?get=cancel&job=68c53a77f11d34695ac1aea4f098af82

But I don't think there is a way to submit a topology in a non-blocking
way, so that env.execute() returns immediately with the JobId.


On Thu, Jul 2, 2015 at 9:35 AM, LINZ, Arnaud <ALINZ@bouyguestelecom.fr>
wrote:

>  Hi Stephan,
>
>
>
> I think that clean shutdown is a major feature to build a complex
> persistent service that use Flink Streaming for a data-quality critical
> task, and I’ll mark my code with a // FIXME comment  waiting for this
> feature to be available !
>
>
>
> Greetings,
>
> Arnaud
>
>
>
>
>
>
>
> *De :* ewenstephan@gmail.com [mailto:ewenstephan@gmail.com] *De la part
> de* Stephan Ewen
> *Envoyé :* mercredi 1 juillet 2015 15:58
> *À :* user@flink.apache.org
> *Objet :* Re: How to cancel a Flink DataSource from the driver code?
>
>
>
> Hi Arnaud!
>
>
>
> There is a pending issue and pull request that is adding a "cancel()" call
> to the command line interface.
>
>
>
> https://github.com/apache/flink/pull/750
>
>
>
> It would be possible to extend that such that the driver can also cancel
> the program.
>
>
>
> Greetings,
>
> Stephan
>
>
>
>
>
> On Wed, Jul 1, 2015 at 3:33 PM, LINZ, Arnaud <ALINZ@bouyguestelecom.fr>
> wrote:
>
>  Hello,
>
>
>
> I really looked in the documentation but unfortunately I could not find
> the answer: how do you cancel your data SourceFunction from your “driver”
> code (i.e., from a monitoring thread that can initiate a proper shutdown) ?
> Calling “cancel()” on the object passed to the addSource() has no effect
> since it does not apply to the marshalled distributed object(s).
>
>
>
> Best regards,
>
> Arnaud
>
>
>
>
>
>
>  ------------------------------
>
>
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