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https://issues.apache.org/jira/browse/NIFI-627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582095#comment-14582095
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Michael Moser commented on NIFI-627:
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[~markap14] Yes when controlling data rate to 5 KB per second, and you let a
300 KB file through, it should wait 60 seconds before sending the next through.
When the Rate Control Criteria = "data rate" I thought this is how it should
work.
[~aldrin] Perhaps the Rate Control Criteria property is the key for which mode
this processor operates in. When "data rate" is selected, then data volume is
prioritized. When "flowfile count" or "attribute value" is selected, then time
is prioritized. Documentation would be key to explain this.
> 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: Michael Moser
> Priority: Minor
> Fix For: 0.2.0
>
>
> 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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