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grpc / grpc-java / #20365
89%

Build:
DEFAULT BRANCH: master
Ran 27 Jul 2026 06:17AM UTC
Jobs 1
Files 686
Run time 1min
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27 Jul 2026 06:04AM UTC coverage: 89.199% (+0.07%) from 89.125%
#20365

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core: Implement LB Delay Observability (Proposal A121) (#12807)

This PR implements **Attempt-Level RPC Delay Observability** across the core channel transport, built-in load balancers, xDS policies, and the OpenTelemetry telemetry plugin, aligned with [gRPC Proposal A121](https://github.com/grpc/proposal/pull/556).

38276 of 42911 relevant lines covered (89.2%)

0.89 hits per line

Coverage Regressions

Lines Coverage ∆ File
36
89.49
0.0% ../grpclb/src/main/java/io/grpc/grpclb/GrpclbState.java
32
80.0
0.35% ../api/src/main/java/io/grpc/LoadBalancer.java
25
92.7
-0.79% ../opentelemetry/src/main/java/io/grpc/opentelemetry/OpenTelemetryMetricsModule.java
17
93.9
0.04% ../xds/src/main/java/io/grpc/xds/CdsLoadBalancer2.java
15
85.48
0.24% ../xds/src/main/java/io/grpc/xds/LeastRequestLoadBalancer.java
10
94.04
0.52% ../opentelemetry/src/main/java/io/grpc/opentelemetry/OpenTelemetryTracingModule.java
8
70.0
5.29% ../core/src/main/java/io/grpc/internal/ForwardingClientStreamTracer.java
8
98.1
0.01% ../core/src/main/java/io/grpc/internal/PickFirstLeafLoadBalancer.java
7
86.0
0.89% ../api/src/main/java/io/grpc/ClientStreamTracer.java
6
88.94
0.26% ../rls/src/main/java/io/grpc/rls/CachingRlsLbClient.java
6
55.0
7.94% ../util/src/main/java/io/grpc/util/ForwardingClientStreamTracer.java
6
95.2
0.02% ../xds/src/main/java/io/grpc/xds/ClusterImplLoadBalancer.java
5
97.83
1.25% ../core/src/main/java/io/grpc/internal/DelayedClientTransport.java
5
98.63
0.0% ../xds/src/main/java/io/grpc/xds/WeightedRoundRobinLoadBalancer.java
4
92.06
0.13% ../util/src/main/java/io/grpc/util/RoundRobinLoadBalancer.java
4
81.36
1.36% ../xds/src/main/java/io/grpc/xds/WeightedRandomPicker.java
3
81.4
0.0% ../xds/src/main/java/io/grpc/xds/LazyLoadBalancer.java
2
94.78
0.04% ../xds/src/main/java/io/grpc/xds/RingHashLoadBalancer.java
1
98.78
0.05% ../core/src/main/java/io/grpc/internal/PickFirstLoadBalancer.java
1
95.26
0.24% ../opentelemetry/src/main/java/io/grpc/opentelemetry/GrpcOpenTelemetry.java
1
74.23
-1.03% ../servlet/src/main/java/io/grpc/servlet/AsyncServletOutputStreamWriter.java
1
99.04
0.05% ../xds/src/main/java/io/grpc/xds/ClusterManagerLoadBalancer.java
1
99.49
0.64% ../xds/src/main/java/io/grpc/xds/PriorityLoadBalancer.java
1
98.11
0.04% ../xds/src/main/java/io/grpc/xds/WeightedTargetLoadBalancer.java
Jobs
ID Job ID Ran Files Coverage
1 #20365.1 27 Jul 2026 06:17AM UTC 686
89.2
Source Files on build #20365
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  • Changed 32
  • Source Changed 0
  • Coverage Changed 32
Coverage ∆ File Lines Relevant Covered Missed Hits/Line
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