[L] Change in bazel/bazel[master]: Bugfix: Split large RemoteOutputService gRPC message (https://github....

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Copybara Service (Gerrit)

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Jun 2, 2026, 6:34:04 AM (yesterday) Jun 2
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Change information

Commit message:
Bugfix: Split large RemoteOutputService gRPC message (https://github.com/bazelbuild/bazel/pull/28758)

### Description
Directories with too many output files creates unlimited gRPC messages for the `RemoteOutputService`. Limit the messages to `maxOutboundMessageSize`.

### Motivation
Large directory outputs from actions in combination with Remote Output Service gives:
```
ERROR: /code/.../BUILD.bazel:3:16: Action large_directory_ failed: (Exit 34): RESOURCE_EXHAUSTED: grpc: received message larger than max (18681338 vs. 4194304)
Target //:large_directory failed to build
```
Example `rules.bzl`:
```
def _large_directory_impl(ctx):
output_dir = ctx.actions.declare_directory(ctx.label.name + "_")
args = ctx.actions.args()
args.add_all([output_dir], expand_directories = False)

ctx.actions.run_shell(
outputs = [output_dir],
command = """
cd $1
for i in $(seq 1 100); do
mkdir $i
for j in $(seq 1 1000); do
echo $i-$j > $i/$j
done
done
""",
arguments = [args],
execution_requirements = {"supports-path-mapping": "1"},
)
return DefaultInfo(files = depset([output_dir]))

large_directory = rule(
implementation = _large_directory_impl,
)
```
Example `BUILD.bazel`:
```
load("//:rules.bzl", "large_directory")

large_directory(
name = "large_directory",
)
```

RELNOTES: None

Closes #28758.
Closes #24705.
PiperOrigin-RevId: 925246636
Change-Id: I1c882a73fb2dc11313de7dd17b5a8d9179736eac
Files:
  • M src/main/java/com/google/devtools/build/lib/remote/BazelOutputService.java
  • M src/main/java/com/google/devtools/build/lib/remote/RemoteModule.java
  • M src/test/java/com/google/devtools/build/lib/remote/BUILD
  • A src/test/java/com/google/devtools/build/lib/remote/BazelOutputServiceTest.java
Change size: L
Delta: 4 files changed, 452 insertions(+), 50 deletions(-)
Branch: refs/heads/master
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Gerrit-MessageType: merged
Gerrit-Project: bazel
Gerrit-Branch: master
Gerrit-Change-Id: I1c882a73fb2dc11313de7dd17b5a8d9179736eac
Gerrit-Change-Number: 329271
Gerrit-PatchSet: 6
Gerrit-Owner: Copybara Service <copybara-wor...@google.com>
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Copybara Service (Gerrit)

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Jun 2, 2026, 6:34:04 AM (yesterday) Jun 2
to bazel-...@googlegroups.com

Copybara Service uploaded new patchset

Copybara Service uploaded patch set #6 to this change.
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