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Posted to user@flink.apache.org by Stavros Kontopoulos <st...@gmail.com> on 2016/05/24 22:27:47 UTC

subtasks and objects

Hey,

Is it true that since taskmanager (a jvm) may have multiple subtasks
implementing the same operator and thus same logic and loading the same
classes, no separating classloading is done right?
So if i use a scala object or static code as in java within that logic then
that is shared among the tasks and synchronization is needed?

Best,
Stavros

Re: subtasks and objects

Posted by Aljoscha Krettek <al...@apache.org>.

Hi,
I think this is correct, yes. It is probably not a good idea to use static
code in Flink jobs.

Cheers,
Aljoscha

On Wed, 25 May 2016 at 00:27 Stavros Kontopoulos <st...@gmail.com>
wrote:

> Hey,
>
> Is it true that since taskmanager (a jvm) may have multiple subtasks
> implementing the same operator and thus same logic and loading the same
> classes, no separating classloading is done right?
> So if i use a scala object or static code as in java within that logic
> then that is shared among the tasks and synchronization is needed?
>
> Best,
> Stavros
>