This is the voting thread for PIP-119. It will stay open for at least 48h. https://github.com/apache/pulsar/issues/13305
----------- ## Motivation The consistent hashing implementation to uniformly assign keys to consumers in the context of a KeyShared subscription, was introduced in https://github.com/apache/pulsar/pull/6791, which was released in Pulsar 2.6.0. While consistent hashing can use slightly more memory in certain cases, it is more suitable as a general default implementation, as it leads to a fairer distribution of keys across consumers, and avoiding corner cases that depend on the sequence of addition/removal of consumers. ## Proposed changes In 2.10 release, for the setting: ```properties # On KeyShared subscriptions, with default AUTO_SPLIT mode, use splitting ranges or # consistent hashing to reassign keys to new consumers subscriptionKeySharedUseConsistentHashing=false ``` Change its default value to `true`. The `AUTO_SPLIT` mode will not be removed nor deprecated. Users will still be able to use the old implementation. -- Matteo Merli <mme...@apache.org>
