Anis Elleuch 456b2ef6eb
Avoid healing to be stuck with many concurrent event listeners (#10111)
If there are many listeners to bucket notifications or to the trace
subsystem, healing fails to work properly since it suspends itself when
the number of concurrent connections is above a certain threshold.

These connections are also continuous and not costly (*no disk access*),
it is okay to just ignore them in waitForLowHTTPReq().
2020-07-22 13:16:55 -07:00
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