Hi Andrew,

at the moment, the ProcessingTimeService cannot be exposed via the
RuntimeContext, because it is stream specific and the RuntimeContext is
also used in the batch context.

Many streaming operators use the same casting pattern in order to get
access to the streaming specific fields. Thus, you should be relatively
safe that the implementation won't change that fast. However, the
StreamingRuntimeContext is not marked as public and, thus, it could change
theoretically in the future.


On Tue, Apr 10, 2018 at 11:32 AM, Andrew Roberts <arobe...@fuze.com> wrote:

> Hello,
> We have some custom Flink sinks that need to use a batching approach, and
> we use timers to facilitate flushing. Currently, we’re casting the
> `RuntimeContext` provided by `RichFunction.getRuntimeContext()` to a
> `StreamingRuntimeContext` (which it always seems to be?), which then gives
> us access to `ProcessingTimeService` as a scheduler. Is there any chance of
> either `getProcessingTimeService` being added to `RuntimeContext`, or some
> other scheduling facility being exposed? With the runtime cast, if the
> implementation changes during an upgrade, our jobs can be completely broken
> without any compiler errors, which is a big source of exposure in our
> project.
> Thanks,
> Andrew
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