[GitHub] [pulsar] lhotari commented on pull request #12037: [Client] Support passing existing executor providers to the client

[GitBox <gi...@apache.org>]

lhotari commented on pull request #12037:
URL: https://github.com/apache/pulsar/pull/12037#issuecomment-919298722


   > Do you want to use this only inside internal Pulsar tools ? the Proxy, Pulsar perf, Pulsar CLI tools ?
   
   yes, mainly an internal, unsupported API. Pulsar Proxy and Pulsar perf are the main internal use cases.
   
   > Why can't we add this support using the regular PulsarClient Builder API ?
   
   It seems that this would just add unnecessary complexity and extra baggage in the public API. 
   I'd assume that there are very few use cases where there would be a need to specify the thread pools to use.
   
   My use case is in improving [nosqlbench's Pulsar driver](https://github.com/nosqlbench/nosqlbench/tree/main/driver-pulsar). This would allow to emulate thousands of isolated Pulsar clients within a single JVM. When a Pulsar client is shared, it doesn't properly emulate real production work loads.
   
   


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