diff --git a/RFC-0019-connector-plugins.md b/RFC-0019-connector-plugins.md
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index 00000000..ac261928
--- /dev/null
+++ b/RFC-0019-connector-plugins.md
@@ -0,0 +1,226 @@
+# RFC-0019 for Presto
+
+## Connector Plugin Support for Presto C++ Workers
+
+Proposers
+* Tim Meehan
+
+## Related Issues
+
+* [RFC-0013](./RFC-0013-dyllib-cpp.md) - Introduced the `registerExtensions` mechanism for dynamically loaded functions, which this RFC extends for connectors
+* [RFC #38](https://github.com/prestodb/rfcs/pull/38) - Introduces the Java and C++ codec infrastructure for connector-provided serialization in the context of Thrift serialization for coordinator to worker communication
+* [PR #26026](https://github.com/prestodb/presto/pull/26026) - Builds on RFC #38 to enable binary serialization codecs for JSON protocol (avoiding Thrift migration) and adds missing codecs embedded in TaskUpdateRequest 
+
+## Summary
+
+Enable runtime connector registration in Presto C++ workers through connector plugins loaded as shared libraries using protocol-agnostic binary serialization. This allows developers to use the existing `registerExtensions` mechanism to add custom Velox connectors while providing the ability to decode Java-side connector structures into corresponding Velox structures.
+
+## Background
+
+Presto C++ workers require all connectors at compile time. The protocol generation statically creates C++ classes from Java definitions, requiring connector-specific data structures in the worker binary. This prevents development of new connectors not known to the Presto engine, representing a significant regression from Java's functionality.
+
+Java coordinators support connector plugin registration with both JSON and Thrift protocols. [PR #26026](https://github.com/prestodb/presto/pull/26026)[^1] adds binary serialization codec support to the JSON protocol.
+
+### Goals
+
+* Enable runtime connector registration in C++ workers
+
+### Non-goals
+
+* Cross-language plugin support (Rust, Go)
+* Hot-reload capabilities
+
+## Proposed Implementation
+
+### Modules Involved
+
+1. **presto-native-execution**
+
+### Components
+
+This RFC leverages existing infrastructure:
+* **ConnectorProtocol**: Existing interface that plugins implement with binary serialization for their connector types[^2]
+* **PrestoToVeloxConnector**: Existing class that creates the ConnectorProtocol and converts protocol types to Velox types
+* **registerExtensions**: Existing mechanism from RFC-0013 used to register connector components from shared libraries
+
+### Implementation Flow
+
+1. **Plugin Registration** (using existing `registerExtensions` mechanism):
+   ```cpp
+   extern "C" void registerExtensions() {
+     // Register Presto-to-Velox converter (which creates the protocol)
+     auto converter = std::make_unique<MyPrestoToVeloxConnector>();
+     registerPrestoToVeloxConnector("my-connector", std::move(converter));
+
+     // Register Velox connector factory
+     velox::connector::registerConnectorFactory("my-connector", factory);
+   }
+   ```
+
+2. **Message Routing**:
+   - Coordinator includes connector name in the serialized payload (embedded in handle objects)
+   - Worker extracts connector name from the deserialized handle to identify which ConnectorProtocol to use
+   - ConnectorManager maintains registry mapping connector names to their protocols:
+     * Static connectors → pre-compiled protocol classes registered at startup
+     * Plugin connectors → ConnectorProtocol implementations from shared libraries
+
+3. **Binary Serialization Protocol**[^3]:
+   - JSON (via [PR #26026](https://github.com/prestodb/presto/pull/26026)) and Thrift support binary payloads
+   - ConnectorCodecProvider (Java) ↔ ConnectorProtocol (C++)
+
+4. **C++ Worker Configuration**[^4]:
+   ```properties
+   # config.properties for C++ worker
+   plugin.dir=/opt/presto/plugin  # Optional, defaults to ./plugin
+   ```
+   Worker scans plugin directory at startup and loads all shared libraries (.so/.dylib files) using dlopen.
+
+### Architecture Diagram
+
+![Architecture Diagram](RFC-0019/architecture-diagram.png)
+
+### Interface Contracts
+
+Each plugin provides its own ConnectorProtocol implementation with connector-specific binary serialization. Worker loads plugins using the mechanism introduced in [RFC-0013](./RFC-0013-dyllib-cpp.md) (and documented [here](https://prestodb.io/docs/current/presto_cpp/plugin/function_plugin.html)), where shared libraries are loaded via dlopen/dlsym at startup based on configuration.
+
+## Metrics
+
+* N/A
+
+## Other Approaches Considered
+
+N/A
+
+## Adoption Plan
+
+* **Impact**: None on existing users. Static connectors unchanged.
+* **New configurations**: `plugin.dir` property in C++ worker config.properties
+* **Migration**: Gradual per-connector basis
+* **Documentation**: Plugin development guide, example implementations
+* **Out of scope**: Cross-language support, hot-reload
+
+## Test Plan
+
+1. **Unit tests**:
+   - ConnectorProtocol serialization correctness
+   - Plugin loading/unloading
+   - Error handling
+
+2. **Integration tests**:
+   - End-to-end queries with plugin connectors
+   - Mixed static/plugin queries
+   - Failure scenarios
+
+## Implementation Considerations
+
+### Security
+
+Shared libraries must be trusted code (same as Java plugins).
+
+### Performance
+
+Virtual function overhead negligible compared to network I/O.
+
+### Compatibility
+
+Plugins require same toolchain as worker binary for ABI compatibility. The Java coordinator must enable `use-connector-provided-serialization-codecs` and have a complete implementation of the binary codec for the connector. Both coordinator and worker need matching SerializationCodec implementations.
+
+### Limitations
+
+C++ ABI compatibility requires matching compiler versions and platform.
+
+[^1]: [PR #26026](https://github.com/prestodb/presto/pull/26026) enables binary serialization in JSON protocol via ConnectorCodecProvider.
+
+[^2]: ConnectorProtocol interface that plugins implement:
+```cpp
+class ConnectorProtocol {
+public:
+  // Plugins implement these for binary serialization
+  virtual void serialize(const std::shared_ptr<ConnectorSplit>& proto,
+                         std::string& binary) const = 0;
+  virtual void deserialize(const std::string& binary,
+                           std::shared_ptr<ConnectorSplit>& proto) const = 0;
+
+  // JSON/Thrift methods
+  virtual void to_json(json& j, const std::shared_ptr<ConnectorSplit>& p) const;
+  virtual void from_json(const json& j, std::shared_ptr<ConnectorSplit>& p) const;
+};
+```
+
+[^3]: Protocol extensions:
+```thrift
+struct PluginConnectorData {
+  1: required string connectorName
+  2: required binary serializedData
+  3: optional map<string, string> metadata
+  4: required i32 protocolVersion
+}
+
+union ConnectorSplitData {
+  1: HiveSplit hiveSplit
+  2: IcebergSplit icebergSplit
+  3: PluginConnectorData pluginData
+}
+```
+JSON with binary payload:
+```json
+{
+  "@type": "ConnectorSplit",
+  "connectorId": "my-connector",
+  "serializedData": "<base64-encoded-binary>",
+  "metadata": {"protocolVersion": "1"}
+}
+```
+
+[^4]: C++ worker configuration and plugin example:
+```properties
+# config.properties for C++ worker
+plugin.dir=/opt/presto/plugin  # Optional, defaults to ./plugin
+```
+Example plugin:
+```cpp
+// Step 1: Protocol deserialization - handles binary to protocol type
+class ArrowConnectorProtocol final : public ConnectorProtocol {
+ public:
+  void deserialize(
+      const std::string& binaryData,
+      std::shared_ptr<ConnectorTableHandle>& proto) const override;
+
+  void to_json(json& j, const std::shared_ptr<ConnectorTableHandle>& p)
+      const override {
+    VELOX_NYI("JSON not supported with binary serialization");
+  }
+
+  /* ... Other deserialization methods, serialization methods throw NYI errors ... */
+};
+
+// Step 2: PrestoToVeloxConnector - creates protocol and converts types
+class ArrowFlightPrestoToVeloxConnector : public PrestoToVeloxConnector {
+public:
+  std::unique_ptr<ConnectorProtocol> createConnectorProtocol() const override {
+    return std::make_unique<ArrowFlightProtocol>();
+  }
+
+  std::unique_ptr<velox::connector::ConnectorSplit> toVeloxSplit(
+      const std::shared_ptr<ConnectorSplit>& prestoSplit) const override {
+    auto arrowSplit = std::dynamic_pointer_cast<ArrowFlightSplit>(prestoSplit);
+    // Convert protocol ArrowFlightSplit to Velox ArrowFlightConnectorSplit
+    return std::make_unique<ArrowFlightConnectorSplit>(
+        arrowSplit->ticket,
+        arrowSplit->endpoint);
+  }
+};
+
+extern "C" {
+  void registerExtensions() {
+    // Register Presto-to-Velox converter
+    auto converter = std::make_unique<ArrowFlightPrestoToVeloxConnector>();
+    registerPrestoToVeloxConnector("arrow-flight", std::move(converter));
+
+    // Register Velox connector factory
+    velox::connector::registerConnectorFactory(
+      "arrow-flight",
+      std::make_unique<ArrowFlightConnectorFactory>());
+  }
+}
+```
\ No newline at end of file
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new file mode 100644
index 00000000..b6a89ee3
--- /dev/null
+++ b/RFC-0019/architecture-diagram.excalidraw
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