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Adds clarifying note about the wakeup jitter.

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Closes #2727.
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James Phillips 2017-02-09 20:28:38 -08:00 committed by GitHub
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@ -45,7 +45,10 @@ to wait for any changes subsequent to that index.
In addition to `index`, endpoints that support blocking will also honor a `wait` In addition to `index`, endpoints that support blocking will also honor a `wait`
parameter specifying a maximum duration for the blocking request. This is limited to parameter specifying a maximum duration for the blocking request. This is limited to
10 minutes. If not set, the wait time defaults to 5 minutes. This value can be specified 10 minutes. If not set, the wait time defaults to 5 minutes. This value can be specified
in the form of "10s" or "5m" (i.e., 10 seconds or 5 minutes, respectively). in the form of "10s" or "5m" (i.e., 10 seconds or 5 minutes, respectively). A small random
amount of additional wait time is added to the supplied maximum `wait` time to spread out
the wake up time of any concurrent requests. This adds up to `wait / 16` additional time
to the maximum duration.
A critical note is that the return of a blocking request is **no guarantee** of a change. It A critical note is that the return of a blocking request is **no guarantee** of a change. It
is possible that the timeout was reached or that there was an idempotent write that does is possible that the timeout was reached or that there was an idempotent write that does