Disable build cache for release artifacts by sarahchen6 · Pull Request #11733 · DataDog/dd-trace-java

sarahchen6 · 2026-06-24T19:03:12Z

What Does This Do

Disable gradle's build cache for release artifacts

Motivation

Ensure release artifacts are assembled from a totally fresh task execution, rather than relying on potentially stale or incorrect build-cache states

Additional Notes

The build step was tested by manually running a GitLab pipeline with CI_COMMIT_TAG=test-release-cache-disabled as a variable (see EFFECTIVE_GRADLE_ARGS print lines in build job here). However, the deploy_to_maven_central job is dependent on a version commit tag that is protected by repo settings, i.e. it can only be tested during an actual release.

Contributor Checklist

Format the title according to the contribution guidelines
Assign the type: and (comp: or inst:) labels in addition to any other useful labels
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Use solves instead, and assign the PR milestone to the issue
Update the CODEOWNERS file on source file addition, migration, or deletion
Update public documentation with any new configuration flags or behaviors
Add your completed PR to the merge queue by commenting /merge. You can also:
- Customize the commit message associated with the merge with /merge --commit-message "..."
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- Get more information in this doc

Jira ticket: APMLP-1377

dd-octo-sts · 2026-06-24T19:19:42Z

🟡 Java Benchmark SLOs — Performance SLO warning (near threshold)

Suite	Status
Startup	🟡 warning

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	13.97 s	13.91 s	[-0.3%; +1.1%] (no difference)
startup:insecure-bank:tracing:Agent	12.88 s	13.02 s	[-2.1%; -0.1%] (maybe better)
startup:petclinic:appsec:Agent	17.37 s	16.55 s	[+0.5%; +9.4%] (maybe worse)
startup:petclinic:iast:Agent	17.38 s	17.55 s	[-2.0%; +0.0%] (no difference)
startup:petclinic:profiling:Agent	17.56 s	17.31 s	[+0.3%; +2.5%] (maybe worse)
startup:petclinic:sca:Agent	17.60 s	17.53 s	[-0.7%; +1.5%] (no difference)
startup:petclinic:tracing:Agent	16.51 s	16.69 s	[-2.4%; +0.2%] (no difference)

Commit: 6452effc · CI Pipeline · Benchmarking Platform UI

Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.

bric3 · 2026-06-24T19:38:29Z

      fi
    - export GRADLE_OPTS="-Dorg.gradle.jvmargs='-Xms$GRADLE_MEMORY_MIN -Xmx$GRADLE_MEMORY_MAX -XX:ErrorFile=/tmp/hs_err_pid%p.log -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp'"
    - export GRADLE_ARGS=" --build-cache --stacktrace --no-daemon --parallel --max-workers=$GRADLE_WORKERS"
+    - export RELEASE_GRADLE_ARGS=" --no-build-cache --rerun-tasks --stacktrace --no-daemon --parallel --max-workers=$GRADLE_WORKERS"


suggestion: Looks good, but instead of duplicating all args, I was suggest having a variable only for the different args between snapshots and release, which currently only set or disable the build cache.

What do you think of the current state? I wasn't able to extract only the release variables because we need to remove --build-cache from the original GRADLE_ARGS

bric3 · 2026-06-25T15:52:40Z

      fi
    - export GRADLE_OPTS="-Dorg.gradle.jvmargs='-Xms$GRADLE_MEMORY_MIN -Xmx$GRADLE_MEMORY_MAX -XX:ErrorFile=/tmp/hs_err_pid%p.log -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp'"
    - export GRADLE_ARGS=" --build-cache --stacktrace --no-daemon --parallel --max-workers=$GRADLE_WORKERS"
+    - "export RELEASE_GRADLE_ARGS=${CI_COMMIT_TAG:+${GRADLE_ARGS/--build-cache/--no-build-cache --rerun-tasks}}"


thought: I'd rather not forcibly rerun tasks during release. For re-run tasks I'd rather validate it in another job.

Especially for the publish job.

Also, why double quote?

thought: I'd rather not forcibly rerun tasks during release. For re-run tasks I'd rather validate it in another job. Especially for the publish job.

Makes sense! IIUC the tasks run from scratch anyway after --no-build-cache, so I think the re-run can be removed entirely 🤔 ->Removed in 04cab87

Also, why double quote?

The quotes are required for the ${...} parsing. I tested valid gitlab file configurations here: https://gitlab.ddbuild.io/DataDog/apm-reliability/dd-trace-java/-/ci/editor

bric3 · 2026-06-25T17:24:04Z

    - ./gradlew --version
-    - ./gradlew clean :dd-java-agent:shadowJar :dd-java-agent:check :dd-trace-api:jar :dd-trace-ot:shadowJar -PskipTests -x spotlessCheck $GRADLE_ARGS
+    - 'if [ -n "$CI_COMMIT_TAG" ]; then echo "=== RELEASE BUILD: assembling agent jar with build cache disabled ==="; fi'
+    - './gradlew clean :dd-java-agent:shadowJar :dd-java-agent:check :dd-trace-api:jar :dd-trace-ot:shadowJar -PskipTests -x spotlessCheck ${RELEASE_GRADLE_ARGS:-$GRADLE_ARGS}'


note: Why single quotes?

The single quotes here are just to match the single quotes in the line above (needed because the : wasn't parsed correctly otherwise) and for the ${...} parsing.

Actually though, I will remove the problematic : from the logging and stick to double quotes here. ->Done in 04cab87

bric3 · 2026-06-25T17:25:50Z

    - export GPG_PASSWORD=$(aws ssm get-parameter --region us-east-1 --name ci.dd-trace-java.signing.gpg_passphrase --with-decryption --query "Parameter.Value" --out text)
-    - ./gradlew -PbuildInfo.build.number=$CI_JOB_ID publishToSonatype closeSonatypeStagingRepository -PskipTests $GRADLE_ARGS
+    - 'if [ -n "$CI_COMMIT_TAG" ]; then echo "=== RELEASE BUILD: publishing artifacts with build cache disabled ==="; fi'
+    - './gradlew -PbuildInfo.build.number=$CI_JOB_ID publishToSonatype closeSonatypeStagingRepository -PskipTests ${RELEASE_GRADLE_ARGS:-$GRADLE_ARGS}'


I think for the publication having the build cache is necessary, otherwise it might rebuild the jar!?

Yes duh you're right! It should use build's same rebuilt jar! Reverted this in 04cab87, thanks

Nevermind.... Let me think about this some more.

sarahchen6 · 2026-06-30T15:56:23Z

CI starts from clean state, so the build job builds artifacts from scratch regardless.

sarahchen6 added type: enhancement Enhancements and improvements tag: no release notes Changes to exclude from release notes comp: tooling Build & Tooling labels Jun 24, 2026

bric3 reviewed Jun 24, 2026

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sarahchen6 force-pushed the sarahchen6/disable-build-cache-for-releases branch 4 times, most recently from 7481157 to a5e1ee0 Compare June 24, 2026 20:30

sarahchen6 marked this pull request as ready for review June 25, 2026 15:18

sarahchen6 requested review from a team as code owners June 25, 2026 15:18

sarahchen6 requested review from bric3, dougqh and erikayasuda and removed request for a team June 25, 2026 15:18

bric3 reviewed Jun 25, 2026

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sarahchen6 marked this pull request as draft June 25, 2026 18:42

sarahchen6 added 5 commits June 25, 2026 17:23

Disable build cache for release artifacts

2fb05fc

Re-organize

16b4916

Remove unnecessary log lines

89eccf6

Clean up and address review comments

5cb7a6f

Use custom gradle settings

4d03218

sarahchen6 force-pushed the sarahchen6/disable-build-cache-for-releases branch from 7e0e5bd to 6440971 Compare June 25, 2026 21:31

Add temporary info param

dee36d3

sarahchen6 force-pushed the sarahchen6/disable-build-cache-for-releases branch from 6440971 to dee36d3 Compare June 25, 2026 21:37

sarahchen6 added 2 commits June 25, 2026 17:59

Fix gradle file

8c8d5d7

Merge branch 'master' into sarahchen6/disable-build-cache-for-releases

6452eff

sarahchen6 closed this Jun 30, 2026

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Disable build cache for release artifacts#11733

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What Does This Do

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🟡 Java Benchmark SLOs — Performance SLO warning (near threshold)

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