[Backport 7.x] Allow unknown task time in QueueResizingEsTPE #41957
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* Allow unknown task time in QueueResizingEsTPE The afterExecute method previously asserted that a TimedRunnable task must have a positive execution time. However, the code in TimedRunnable returns a value of -1 when a task time is unknown. Here, we expand the logic in the assertion to allow for that possibility, and we don't update our task time average if the value is negative. * Add a failure flag to TimedRunnable In order to be sure that a task has an execution time of -1 because of a failure, I'm adding a failure flag boolean to the TimedRunnable class. If execution time is negative for some other reason, an assertion will fail. Backport of elastic#41810 Fixes elastic#41448
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The afterExecute method previously asserted that a TimedRunnable task
must have a positive execution time. However, the code in TimedRunnable
returns a value of -1 when a task time is unknown. Here, we expand the
logic in the assertion to allow for that possibility, and we don't
update our task time average if the value is negative.
In order to be sure that a task has an execution time of -1 because of
a failure, I'm adding a failure flag boolean to the TimedRunnable class.
If execution time is negative for some other reason, an assertion will
fail.
Backport of #41810
Fixes #41448