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https://issues.apache.org/jira/browse/QUARKS-124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15240497#comment-15240497
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Dale LaBossiere edited comment on QUARKS-124 at 4/14/16 3:13 PM:
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I think that can be accomplished by inserting an "deadtime filter" right before
the "publish", where the filter function:
- deadtimePeriod==0 means "pass all"; deadtimePeriod can be changed dynamically
- when a tuple is received:
- if "now" < last-passed-time + deadtimePeriod, filter out the tuple (return
false)
otherwise update the last-passed-time and pass the tuple (return true)
[~djd] does that sort of logic achieve the desired effect / was the scenario
description accurate? If so I'll do a recipe for it. Then I'll see about
creating an "deadtime filter" to add to quarks.analytics.sensors
was (Author: dlaboss):
I think that can be accomplished by inserting an "elapsed time filter" right
before the "publish", where the filter function:
- maintains a last-passed-time and min-elapsed-time state
- min-elapsed-time==0 means "pass all"; min-elapsed-time can be changed
dynamically
- in the "pass all" mode: it updates the last-passed-time and passes the tuple
(returns true)
- in the "elapsed time" mode: when it receives a tuple it sees if the
min-elapsed-time has elapsed (e.g., 30min) since last-passed-time. If it has
then it updates last-passed-time and passes the tuple (returns true), otherwise
it filters the tuple out (returns false)
[~djd] does that sort of logic achieve the desired effect / was the scenario
description accurate? If so I'll do a recipe for it. Then I'll see about
creating an "elapsed time filter" to add to quarks.analytics.sensors
> Add a recipe for changing the rate at which data is published
> -------------------------------------------------------------
>
> Key: QUARKS-124
> URL: https://issues.apache.org/jira/browse/QUARKS-124
> Project: Quarks
> Issue Type: Task
> Components: Documentation
> Reporter: Dale LaBossiere
> Assignee: Dale LaBossiere
>
> e.g., analytics are being continuously performed and new results generated
> say every 1min but under "normal" conditions a "normal" result is only
> published (equivalently an IotDevice event generated) every 30min. Some
> alert condition is detected by local analytics and the application wants to
> start publishing the results every 1min.
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