dnrusakov commented on issue #3322: WIP! Optimize hot spots in Stream Manager URL: https://github.com/apache/incubator-heron/pull/3322#issuecomment-517857072 This is the difference in the CPU consumption when we were running the PR with `-O3`:  - Running with current master up until 14:20 - Running with --copt=-03 and hopscotch hashmap after 14:20 This chart and testing provided by guys from Heron community. @Aditya and @rohanag12 thank you very much for your help!
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