Keep one thing in mind: if you want the element remains legal after the
function call ends (maybe map(), flatmap(), depends on what you are using),
you should copy the elements.
Typical scenarios includes:
1. Save the elements into some collection like array, list, map for later
usage, you should copy it explicitly.
2. Pass the element into some async calls, you should copy it.

Best,
Kurt


On Fri, Mar 15, 2019 at 8:45 AM yinhua.dai <yinhua.2...@outlook.com> wrote:

> Hi Elias,
>
> Thanks.
> Would it be good enough as long as we use always use different object when
> call the Collector.collect() method in the operator?
>
>
>
> --
> Sent from:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
>

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