Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/1664
Before
https://docs.google.com/spreadsheets/d/1tTyIxbNafvVw0tQjWjiBQCKDCPbbnfbT5JZ7F5JEBNE/edit#gid=0
After
https://docs.google.com/spreadsheets/d/1160ycB16aiUXuge8-bFItxKMw3xfh8Adz0356NlQa_8/edit#gid=0
19 streams are reduced to 13 streams.
Still finding out how to handle AVG without current trick (calculating SUM
and COUNT temporary and dividing) with keeping benefit with combiner aggregator
(partition aggregation -> global aggregation).
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