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From Aljoscha Krettek <aljos...@apache.org>
Subject Re: System properties when submitting flink job to YARN Session
Date Thu, 13 Jul 2017 09:13:55 GMT
Hi Jins,

Do these settings have to be in the Jar File? Since you’re using Beam, you could also use
PipelineOptions to make the options accessible to functions at runtime.


> On 12. Jul 2017, at 20:21, Jins George <jins.george@aeris.net> wrote:
> Hi Aljoscha,
> I am still using Beam on Flink. I have one yarn session running multiple streaming jobs.
The application jar contains some environment specific run time properties( like ip addresses,
rest api end points etc). This adds overhead in my usecase as we have to deploy this in multiple
environments.  I was trying to decouple these properties files from the uber jar and provide
as as either a classpath resource or pass the path of the file as a system property to the
> So far I noticed following options to achieve this. 
> put all properties in a file and use --classpath file:// <file:///><path to
file> option  in flink run  command . This needs the url to be accessible from all nodes,
something like NFS
> use -D in yarn-session to pass each properties. This will need to restart the yarn session
if a new property gets added.
> An ideal solution for me would to provide a local classpath to flink run command and
that gets propagated to other workers automatically :)
> Thanks,
> Jins
> On 07/12/2017 02:25 AM, Aljoscha Krettek wrote:
>> Hi,
>> Yes, setting the property using -D when creating the session should work to make
it available on all workers. I think after that it cannot be changed since they JVMs are already
>> If I may ask, what’s your use case for this? Are you still using Beam on Flink
or are you using vanilla Flink with this?
>> Best,
>> Aljoscha
>>> On 11. Jul 2017, at 07:24, Jins George <jins.george@aeris.net> <mailto:jins.george@aeris.net>
>>> Thanks Nico. I am able to pass arguments to the  main program, that works, but
not exactly that I was looking for.
>>> I guess to have all worker jvms the same  system property,  I have to set it
at yarn-session creation time using -D ( haven't tried it yet)
>>> Thanks,
>>> Jins George
>>> On 07/10/2017 06:56 AM, Nico Kruber wrote:
>>>> Hi Jins,
>>>> I'm not sure whether you can define a system property, but you can include
>>>> in the program arguments of "flink run [OPTIONS] <jar-file> <arguments>"
>>>> You may also be able to define system properties but these are probably only

>>>> valid in your main() function executed within the flink run script, not any

>>>> operators run on other JVM nodes. Have you tried that?
>>>> Nico
>>>> On Saturday, 8 July 2017 18:08:59 CEST Jins George wrote:
>>>>> Hello,
>>>>> I want to set the path of a properties file as System property in my
>>>>> application(something like -Dkey=value).
>>>>> Is there a way to set it while submitting a flink job to running YARN
>>>>> Session? I am using //bin/flink run/ to submit the job to a already
>>>>> running YARN session.
>>>>> Thanks,
>>>>> Jins George

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