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https://issues.apache.org/jira/browse/NIFI-1682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15896670#comment-15896670
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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 @trixpan, sorry for the delay but I just rebased it again.
> 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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