yjshen opened a new pull request #5900: [pulsar-flink]Cache Pulsar client to make it shared among tasks in a process URL: https://github.com/apache/pulsar/pull/5900 ### Motivation In the current implementation, each source/sink task that talks to pulsar will create a PulsarClient of its own and create producer/consumer accordingly. Therefore, for processes with many Flink tasks running inside, we should make the client shared among tasks and avoid creating a new client for each of them. ### Modifications This PR uses guavaCache to achieve PulsarClient sharing. ### Verifying this change This change could be tested by setting flink taskmanager.numberOfTaskSlots bigger than 1 and check pulsar instance created. ### 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) ### Documentation - Does this pull request introduce a new feature? (no)
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