codelipenghui opened a new pull request #6647: Improve Key_Shared subscription message dispatching performance. URL: https://github.com/apache/pulsar/pull/6647 ### Motivation Improve Key_Shared subscription message dispatching performance. ### Modifications 1. Reduce make hash for the message key 2. Reduce select consumer ### Verifying this change Performance improves. On my laptop, publish messages with rate 150k/s and create 1500 consumers. The consumption rate can't catchup the message publish rate. After this change, 3000 consumers still can catchup the message publish rate. ### Does this pull request potentially affect one of the following parts: *If `yes` was chosen, please highlight the changes* - Dependencies (does it add or upgrade a dependency): (no) - The public API: (no) - The schema: (no) - The default values of configurations: (no) - The wire protocol: (no) - The rest endpoints: (no) - The admin cli options: (no) - Anything that affects deployment: (no) ### Documentation - Does this pull request introduce a new feature? (no)
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