From 765d48d0d621538a2d713bb8e5736864cedc89bc Mon Sep 17 00:00:00 2001
From: Demogorgon314 <kwang@streamnative.io>
Date: Fri, 13 Sep 2024 15:11:17 +0800
Subject: [PATCH 1/2] PIP-379: Support setting up specific namespaces to
 skipping the load-shedding

---
 pip/pip_379.md | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 pip/pip_379.md

diff --git a/pip/pip_379.md b/pip/pip_379.md
new file mode 100644
index 0000000000000..df08999c2dafa
--- /dev/null
+++ b/pip/pip_379.md
@@ -0,0 +1,80 @@
+# PIP-379: Support setting up specific namespaces to skipping the load-shedding
+
+# Background knowledge
+
+Some of the Pulsar protocols, for example the KoP will use a system topic to store the metadata, eg: the topic's offset,
+when the bundle owner changes the topic's data will need to be full recovered to the broker, and when unloaded,
+it needs to remove the broker local memory, if the topic's data were huge, it may cause slow loading.
+
+# Motivation
+
+Support setting up specific namespaces to skipping the load-shedding, for the system topics namespace,
+or for benchmark-relevant namespaces we better be skipping the load shedding because for system topics,
+if the ownership transfers to another broker, it may need to recover the data by replaying the messages,
+it will cause message pub/sub temporary unavailable.
+
+# Goals
+
+## In Scope
+
+- Support setting up specific namespaces to skipping the load-shedding
+- Use `RoundRobinBrokerSelector` to assign the skipped namespaces bundle.
+
+# High Level Design
+
+Add new configuration `loadBalancerSheddingExcludedNamespaces` to the `ServiceConfiguration`.
+While doing the load-shedding, filter out the configuration namespaces.
+
+For shedding excluded namespaces, use `RoundRobinBrokerSelector` to assign the ownership, it can make the assignment
+more average because these will not automatically rebalance to another broker unless manually unloaded it.
+
+# Detailed Design
+
+## Design & Implementation Details
+
+## Public-facing Changes
+
+### Configuration
+
+Add new configuration `loadBalancerSheddingExcludedNamespaces` to the `ServiceConfiguration`.
+
+```java
+    @FieldContext(
+            dynamic = true,
+            category = CATEGORY_LOAD_BALANCER,
+            doc = "The namespaces skip for load shedding"
+    )
+    private Set<String> loadBalancerSheddingExcludedNamespaces = new TreeSet<>();;
+```
+
+# Monitoring
+
+No new metrics are added in this proposal.
+
+# Security Considerations
+
+No new security considerations are added in this proposal.
+
+# Backward & Forward Compatibility
+
+## Revert
+
+No changes are needed to revert to the previous version.
+
+## Upgrade
+
+No other changes are needed to upgrade to the new version.
+
+# Alternatives
+
+None
+
+# General Notes
+
+# Links
+
+<!--
+Updated afterwards
+-->
+* Mailing List discussion thread:
+* Mailing List voting thread:

From 59f4f861c2053a75c2f5e3b9a08ca59510869f54 Mon Sep 17 00:00:00 2001
From: Lari Hotari <lhotari@users.noreply.github.com>
Date: Tue, 17 Sep 2024 21:45:48 -0700
Subject: [PATCH 2/2] rename pip_379.md to pip_380.md

---
 pip/{pip_379.md => pip_380.md} | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 rename pip/{pip_379.md => pip_380.md} (97%)

diff --git a/pip/pip_379.md b/pip/pip_380.md
similarity index 97%
rename from pip/pip_379.md
rename to pip/pip_380.md
index df08999c2dafa..982f8da846555 100644
--- a/pip/pip_379.md
+++ b/pip/pip_380.md
@@ -1,4 +1,4 @@
-# PIP-379: Support setting up specific namespaces to skipping the load-shedding
+# PIP-380: Support setting up specific namespaces to skipping the load-shedding
 
 # Background knowledge