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https://issues.apache.org/jira/browse/NIFI-1682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15823346#comment-15823346
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ASF GitHub Bot commented on NIFI-1682:
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Github user JPercivall commented on the issue:
https://github.com/apache/nifi/pull/1328
Hey @pvillard31, thanks for the feedback. I believe I've addressed all the
comments. For the exception handling I created another relationship. The set
state fail relationship will typically be routed back to be retried while the
"failure" would be routed off.
I also adjusted the "get" state failures to match UpdateAttribute (it is
put back on the queue). This is done because any problems with getting the
state are framework related and "punishing" the FlowFile for framework problems
is counterproductive.
> Processor to do Rolling Window calculations using FlowFile attributes
> ---------------------------------------------------------------------
>
> Key: NIFI-1682
> URL: https://issues.apache.org/jira/browse/NIFI-1682
> Project: Apache NiFi
> Issue Type: New Feature
> Reporter: Joseph Percivall
> Assignee: Joseph Percivall
>
> Using state it is now possible to store a map of key value pairs up to 1mb.
> Taking into account storing a timestamp string and a double converted to a
> string this is on the order of 5000 values. This enables a processor that can
> store a rolling window of values to calculate things such as a rolling mean.
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