Joseph Percivall created NIFI-1682:
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             Summary: RollingWindowAggregator Processor
                 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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