[Issue #3609] fix scheduledExecutorService dont shut down

[yuz10]

Make sure set the target branch to develop

What is the purpose of the change

fix #3609

Brief changelog

The scheduledExecutorService is created at class init, need to call shutdown whether its used or not.

Verifying this change

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[yuz10]

#3453 #3454

[coveralls]

Coverage decreased (-0.1%) to 54.376% when pulling 062e0cb on yuz10-patch-1 into 21faa68 on master.