lhotari opened a new pull request, #24391:
URL: https://github.com/apache/pulsar/pull/24391

   ### Motivation
   
   To reduce the size of ZNodes, there's ManagedCursorInfo compression which 
was introduced in [PIP-146](https://github.com/apache/pulsar/issues/14529). 
ManagedLedgerInfo compression was introduced earlier, in PR #11490.
   ManagedCursorInfo compression can enable using a higher 
`managedLedgerMaxUnackedRangesToPersist` and 
`managedLedgerMaxUnackedRangesToPersistInMetadataStore` settings.
   ManagedLedgerInfo compression is required for a very large amount of 
BookKeeper or tiered storage ledgers for a single topic.  Both settings reduce 
the size of metadata storage which will reduce overall ZooKeeper memory usage. 
After enabling compression, existing entries won't be compressed until they are 
modified.
   
   ### Modifications
   
   - add the settings to `broker.conf` and `standalone.conf` so that it's 
easier to enable the settings. Without settings in `broker.conf`, it's 
necessary to use `PULSAR_PREFIX_` syntax with Pulsar's Helm chart and docker 
image when using the `apply-config-from-env.py` solution that is used to apply 
environment variables to `broker.conf`.
   
   ### Documentation
   
   <!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. -->
   
   - [ ] `doc` <!-- Your PR contains doc changes. -->
   - [ ] `doc-required` <!-- Your PR changes impact docs and you will update 
later -->
   - [x] `doc-not-needed` <!-- Your PR changes do not impact docs -->
   - [ ] `doc-complete` <!-- Docs have been already added -->


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