grpc/grpc-java

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The Java gRPC implementation. HTTP/2 based RPC

Stars: 12.1k
Forks: 4k
Open beginner issues: 1
Indexed issues: 447
Avg merge: 2d 17h
Merged PRs (30d): 37

Dominant language: Java
License: Apache-2.0
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 17, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

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447 open issues indexed

Tracking ExperimentalApi status for Blocking Streaming calls Open

experimental API

grpc/grpc-java#10918 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Include network four-tuple for connections in io.grpc.ChannelLogger logs Open

enhancement

grpc/grpc-java#10936 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
binder: Cached PERMISSION_DENIED results from SecurityPolicies.hasPermission() can be confusing Open

binder enhancement

grpc/grpc-java#10950 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Update to Protobuf 4.x Open

enhancement

grpc/grpc-java#11015 · 38 comments · 42 reactions · 1 assignee · Indexed Sep 17, 2026
Tracking issue for setOnReadyThreshold public API Open

experimental API

grpc/grpc-java#11021 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Cannot use Google Cloud Logging and Google Cloud Observability together (`IllegalStateException: Set cannot be called after any get call`) Open

enhancement

grpc/grpc-java#11048 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Tracking issue for Metrics Architecture Open

experimental API

grpc/grpc-java#11110 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
visibility into client-side queuing and flow control Open

enhancement

grpc/grpc-java#11114 · 7 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Support --incompatible_enable_proto_toolchain_resolution Open

enhancement help wanted Waiting on reporter

grpc/grpc-java#11152 · 8 comments · 5 reactions · 0 assignees · Indexed Sep 17, 2026
[netty] Refuse connections from certain clients (based on IP) Open

enhancement

grpc/grpc-java#11221 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Binder: provide a SecurityPolicy factory method that requires apps to have the same signature as the platform Open

binder enhancement

grpc/grpc-java#11238 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Unexpected cancellation when subsequent message in client stream exceeds max size Open

grpc/grpc-java#11245 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Unexpected error when server expands a compressed message to learn it is too large Open

enhancement

grpc/grpc-java#11246 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Cardinality violations should use error code “unimplemented” Open

grpc/grpc-java#11247 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Client does not report expected error code for 431 HTTP status Open

grpc/grpc-java#11248 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
CsmObservability is experimental Open

experimental API

grpc/grpc-java#11249 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Track OpenTelemetry Tracing being experimental Open

enhancement

grpc/grpc-java#11400 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
newAttachHeadersServerInterceptor() is experimental Open

experimental API

grpc/grpc-java#11462 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
protoc-gen-grpc-java can't be built with gradle and protobuf 22+ Open

enhancement

grpc/grpc-java#11475 · 3 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
Tracking issue for s2a public APIs Open

experimental API

grpc/grpc-java#11533 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
binder: SecurityPolicies.allOf() and anyOf() should efficiently interop with AsyncSecurityPolicy Open

binder enhancement

grpc/grpc-java#11547 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Tracking issue for StatusOr Experimental API Open

experimental API

grpc/grpc-java#11563 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 17, 2026
getAlpnSelectedProtocol android 15 changes Open

grpc/grpc-java#11625 · 4 comments · 1 reaction · 1 assignee · Indexed Sep 17, 2026
LoadBalancer PickResult with authority override is experimental. Open

experimental API

grpc/grpc-java#11656 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
APIs with Duration overload are experimental Open

experimental API

grpc/grpc-java#11657 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Metadata: Header value validation Open

grpc/grpc-java#11679 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
xds: Support UpstreamTlsContext.sni with XdsChannelCredentials Open

enhancement xds

grpc/grpc-java#11784 · 5 comments · 0 reactions · 1 assignee · Indexed Sep 17, 2026
Proto source with label @@grpc-proto~//:... should be in same package as consuming rule Open

grpc/grpc-java#11791 · 1 comment · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Implement sourced_metadata from rbac.proto Open

grpc/grpc-java#11852 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Upgrade androidx.annotation:annotation:1.9.0 Open

code health enhancement

grpc/grpc-java#11889 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Performance issues caused by abnormal HTTP/2 SETTINGS frame exchange Open

api-review question

grpc/grpc-java#11958 · 4 comments · 1 reaction · 0 assignees · Indexed Sep 17, 2026
NameResolver.ATTR_BACKEND_SERVICE is experimental Open

experimental API

grpc/grpc-java#11989 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
blocking stub v2 server streaming calls sometimes require .read() to initiate request Open

grpc/grpc-java#12073 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
BlockingClientCall.write should block after writing the message Open

grpc/grpc-java#12074 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support for slow start with WRR Load Balancer Policy Open

enhancement

grpc/grpc-java#12087 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Blocking stub blocks indefinitely if client exceeds max outbound message size Open

bug

grpc/grpc-java#12109 · 8 comments · 2 reactions · 0 assignees · Indexed Sep 17, 2026
Expose ServerCallStreamObserver to server-side stubs Open

enhancement

grpc/grpc-java#12116 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
recordMethodName is incorrectly recording "other" when the stream is cancelled before the call is started Open

grpc/grpc-java#12117 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support grpc readiness probing use case Open

enhancement

grpc/grpc-java#12157 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Grafana performance dashboard missing java CPU metrics Open

question

grpc/grpc-java#12159 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Tracking for Tracing and Stats APIs for OpenCensus Open

enhancement experimental API

grpc/grpc-java#12178 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
binder: Server pre-authorization is experimental Open

binder experimental API

grpc/grpc-java#12191 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
BlockingClientCall should be AutoCloseable Open

grpc/grpc-java#12197 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Create an API to set Cronet read buffer size Open

enhancement

grpc/grpc-java#12198 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
NameResolvers themselves should be responsible for retrying errors on their own schedule, not ManagedChannelImpl Open

enhancement

grpc/grpc-java#12210 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
least_request LB strategy causes full TPS drop when upstream endpoint hang Open

enhancement

grpc/grpc-java#12237 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Support for opaque "target" URIs with empty scheme-specific part per RFC 3986 Open

enhancement

grpc/grpc-java#12244 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 17, 2026
binder: Cross-user channels require SDK R+ today but they could be made to work for system apps on P & Q as well Open

binder enhancement

grpc/grpc-java#12279 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
Add support on riscv64 Open

enhancement

grpc/grpc-java#12316 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026
BinderTransport's TRANSPORT_ATTR_LOCAL_ADDR is different than its peer's TRANSPORT_ATTR_REMOTE_ADDR Open

binder

grpc/grpc-java#12347 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 17, 2026

grpc/grpc-java

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