introduce IntervalTimer and use it instead of threading.Timer
#452
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`threading.Timer` only runs the function once, and then stops the thread. To get an interval timer, we used to start a new thread when the original thread expired. This is wasteful, and in the worst case can lead to runoff creation of timer threads (elastic#450). Instead, the `IntervalTimer` will run in an endless loop, executing the given function every n seconds.
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closed in 5337c43 |
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threading.Timeronly runs the function once, and then stops the thread.To get an interval timer, we used to start a new thread when the original
thread expired. This is wasteful, and in the worst case can lead to
runoff creation of timer threads (#450).
Instead, the
IntervalTimerwill run in an endless loop, executing thegiven function every n seconds.