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https://issues.apache.org/jira/browse/NIFI-627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15135091#comment-15135091
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Aldrin Piri commented on NIFI-627:
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Most certainly feel free to! Sorry that I have "assign hogged" this, always
seems like other things took priority.
> ControlRate processor does not accurately control the rate
> ----------------------------------------------------------
>
> Key: NIFI-627
> URL: https://issues.apache.org/jira/browse/NIFI-627
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 0.1.0
> Reporter: Michael Moser
> Assignee: Aldrin Piri
> Priority: Minor
>
> Set a ControlRate processor to something like 5 KB per 1 sec. Generate flow
> files that are about 300 KB in size and feed a bunch to this processor. This
> should allow about 5 files through per 5 minutes. But it allows a lot more
> data through than it should. The difference seems to get worse with really
> low Time Duration values. And people tend to think in number of bytes per
> second so the temptation to set Time Duration to 1 sec is great.
> Also, if ControlRate has multiple input queues, it seems to output even more
> data than it should.
> This seems to be caused by the code at the beginning of ControlRate
> onTrigger(). Under some conditions when the number of files that are allowed
> through per Time Duration is less than 1, the Throttle is being removed from
> the throttleMap while it actually still should be in use.
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