Mesos backpressure - #1630
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baconmania
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Oct 12, 2017
| String message = String.format("Overflow of event buffer (%s), singularity could not keep up!", scheduler.getEventBufferSize()); | ||
| scheduler.onUncaughtException(new EventBufferOverflowException(message)); | ||
| }, | ||
| BackpressureOverflow.ON_OVERFLOW_ERROR); |
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So just to confirm, if the set of pending events overflows the max buffer size, we get a top-level exception and abort?
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yes, it'll cause an abort if the buffer overflows. I felt that was more in line with our idea of keeping state consistent than dropping things. There is an alternative for using an unbounded buffer, but I figured it'd be better to abort with an exception than to oom
baconmania
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Oct 12, 2017
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Diff will look nicer once the other mesos_1 PR is merged. Relevant commit is d15af0f
Moves the backpressure to the mesos client itself now that 0.2.0 of mesos-rxjava allows us to set backpressure behaviors. Also doubles the default event buffer size to handle large influxes of status updates from reconciliation
/cc @darcatron @baconmania