Roman Leventov created FLINK-16503:
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Summary: Don't assign ScheduledExecutorService into variables of
ExecutorService or Executor types
Key: FLINK-16503
URL: https://issues.apache.org/jira/browse/FLINK-16503
Project: Flink
Issue Type: Improvement
Reporter: Roman Leventov
There is an unnecessary efficiency cost to assigning ScheduledExecutorService
(typically, ScheduledThreadPoolExecutor) into variables of ExecutorService or
Executor types.
Currently, there is one such occurrence in production code, in
TaskManagerRunner, and three more in tests.
They could be found using IntelliJ's Structural search pattern (and Structural
Search inspection):
{{$x$ = $y$;}}
Where the Type of {{$x$}} is set to {{ExecutorService|Executor}} ("within type
hierarchy" checkbox is off), and the Type of {{$y$}} is set to
{{ScheduledThreadPoolExecutor}} ("within type hierarchy" checkbox is on).
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