[BP-2.0][FLINK-37206][Runtime] Fix initialization of batching timer service in async state operators #26092
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This is a backport PR to 2.0 for #26071
What is the purpose of the change
We have ship two abstract stream operators for async state processing, where a async timer service (manager) is introduced. Actually these operators can run in sync mode, this is especially the case for batch execution mode. Currently there is an issue when initializing batching timer service in those operators. This PR fixes this to enable batch execution for operators with async state.
Brief change log
BatchExecutionInternalTimeServiceWithAsyncState
and properly create this in async state operators.Verifying this change
This change added test
BatchExecutionInternalTimeServiceWithAsyncStateTest
.Does this pull request potentially affect one of the following parts:
@Public(Evolving)
: noDocumentation