+1 On Wed, 22 Dec 2021 at 07:46, Matteo Merli <mme...@apache.org> wrote:
> This is the voting thread for PIP-120. It will stay open for at least 48h. > > 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. > > > -- > Matteo Merli > <mme...@apache.org> >
