ORCA provides APIs to inject custom metrics at a gRPC server, and consume them at a gRPC client. It implements A51: Custom Backend Metrics Support.
Bug Fixescore: Fix a bug that the server stream should not deliver halfClose() when the call is immediately canceled. The bug causes a bad message INTERNAL, desc: Half-closed without a request at server call. (#9362)
core: Workaround Retry causing memory leak. (#9415)
core: Disable retry by default for in-process transport's channel.(#9368)