[GitHub] [pulsar] merlimat opened a new issue #13306: PIP-120: Enable client memory limit by default

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

merlimat opened a new issue #13306:
URL: https://github.com/apache/pulsar/issues/13306


   ## Motivation
   
   In Pulsar 2.8, we have introduced a setting to control the amount of memory
   used by a client instance.
   
   ```java
   interface ClientBuilder {
       ClientBuilder memoryLimit(long memoryLimit, SizeUnit unit);
   }
   ```
   
   By default, in 2.8 and 2.9 this setting is set to 0, meaning no limit is being
   enforced.
   
   I think it's a good time for 2.10 to enable this setting by default and,
   correspondingly, to disable by default the producer queue size limit.
   
   This will simplify a lot the configuration that a producer application will
   have to come up with, when publishing with many topic/partitions or when messages
   are bigger than expected.
   
   ## Proposed changes
   
   In 2.10 release, for the `ClientBuilder`, change
     * `memoryLimit`: 0 -> 64 MB
   
   For the `ProducerBuilder`, changes
     * `maxPendingMessages`: 1000 -> 0
   
   64MB is picked because it's a small enough memory size that will guarantee
   a very high producer throughput, irrespective of the individual messages size.
   


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[GitHub] [pulsar] merlimat closed issue #13306: PIP-120: Enable client memory limit by default

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

merlimat closed issue #13306:
URL: https://github.com/apache/pulsar/issues/13306


   


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