Github user vrozov commented on the pull request:
https://github.com/apache/incubator-apex-core/pull/271#issuecomment-197652278
Another benefit of the current approach is that it is less prone to
incorrect sleep time setting. I tried setting sleep time to 100 milliseconds
and with the new approach, the throughput is not much affected, with the old
approach, the throughput drops significantly.
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