#20393
89%

Ran 05 Aug 2026 10:29AM UTC

Jobs 1

Files 686

Run time 2min

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Committed 05 Aug 2026 10:15AM UTC coverage: 89.152% (-0.004%) from 89.156%

Build # #20393

Build Type

push

github

Committed by

web-flow

Commit Message

xds: fix race condition in ext_proc client interceptor halfClose (#12948)

Fixes a race condition in
`ExternalProcessorClientInterceptor$DataPlaneClientCall.halfClose()`
that can cause the call to hang when the external processor stream
completes concurrently.

If the external processor stream completes (marking state as COMPLETED
and setting passThroughMode to true) after `halfClose()` has already
checked `passThroughMode` (seeing false), halfClose() would subsequently
see the state as COMPLETED and return early without invoking
`proceedWithHalfClose()`.

This commit fixes the race by re-checking passThroughMode inside the
`isCompleted()` block in `halfClose()`, ensuring we proceed with
half-close if pass-through mode was enabled late.

Coverage Stats

38323 of 42986 relevant lines covered (89.15%)

0.89 hits per line

Coverage Regressions

Lines	Coverage	∆	File
12	96.12	-0.26%	../xds/src/main/java/io/grpc/xds/ExternalProcessorClientInterceptor.java
3	93.22	-1.69%	../core/src/main/java/io/grpc/internal/AbstractClientStream.java
2	88.89	-11.11%	../netty/src/main/java/io/grpc/netty/UdsNameResolver.java
1	87.88	-3.03%	../netty/src/main/java/io/grpc/netty/ClientTransportLifecycleManager.java
1	91.03	-0.19%	../netty/src/main/java/io/grpc/netty/NettyServerHandler.java
1	93.21	-0.14%	../okhttp/src/main/java/io/grpc/okhttp/OkHttpClientTransport.java
1	73.27	-0.99%	../servlet/src/main/java/io/grpc/servlet/AsyncServletOutputStreamWriter.java

Jobs

ID	Job ID	Ran	Files	Coverage
1	#20393.1	05 Aug 2026 10:29AM UTC	686	89.15

grpc / grpc-java / #20393
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grpc / grpc-java / #20393 89%

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