[GitHub] [pulsar] lhotari commented on pull request #12137: [Broker] Change the default number of namespace bundles to 32

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

lhotari commented on pull request #12137:
URL: https://github.com/apache/pulsar/pull/12137#issuecomment-925250699


   > `defaultNumberOfNamespaceBundles` is a configurable param and it can be configured with different values for different use cases. Having large number of bundles come with its cost and it should not be large enough by default for every namespace. We still have kept 4 by default which should be more than enough. if specific usecase require 16/32/64 bundles then user should update configuration file in the system and we should avoid changing default values based on specific user's usecase,
   
   That's true that it's configurable, but the default value 4 leads often to a case where a broker in a 3 broker cluster doesn't get bundles assigned and is completely idling while the other 2 brokers take all of the load. I can provide a repro for this case if that helps describing the problem.


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