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Address code review feedback for build-and-summarize by jbachorik · Pull Request #775 · DataDog/java-profiler · GitHub

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Address code review feedback for build-and-summarize - #775

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What does this PR do?:

Fixes three bugs in the deterministic Gradle log parser inside .claude/commands/build-and-summarize (added in an uncommitted local change prior to this PR, replacing a headless-claude-spawn approach with a self-contained Python parser):

  • An IndexError when a stray non-blank, non-* line appears between the FAILURE: banner and the * What went wrong: header, leaving headlines empty at index time.
  • Test/module counts being misattributed under parallel Gradle builds, since they were attached to "whatever > Task line was last seen," including non-test tasks that interleave with a test task's completion line.
  • Failure headlines being paired with failed tasks by list position instead of identity, so with --continue and multiple failing tasks, headlines could land on the wrong task or go missing entirely.

Also removes an unverifiable comment claiming managed settings pin a specific model and bill real money for log parsing — that claim isn't backed by anything in this file.

Motivation:

A code review of the uncommitted parser changes surfaced these correctness bugs before they shipped.

Additional Notes:

None.

How to test the change?:

Verified by hand-running the parser logic against a synthetic Gradle log that reproduces all three bugs (stray line before a headline, parallel task interleaving, multi-failure --continue output) and confirming correct output with no crash.

For Datadog employees:

  • This PR doesn't touch any of that.
  • JIRA: N/A

jbachorik added the AI label Sep 1, 2026
jbachorik changed the title Fix build-and-summarize log-parsing bugs Address code review feedback for build-and-summarize Sep 1, 2026
Fixes an IndexError on stray log lines, test-count misattribution
under parallel builds, and positional (rather than identity-based)
pairing of failure headlines with failed tasks. Also removes an
unverifiable comment about managed-settings model billing.
jbachorik force-pushed the jb/fix-build-and-summarize branch from dc33515 to 30357ff Compare September 1, 2026 15:46

dd-octo-sts Bot commented Sep 1, 2026 •
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Scan-Build Report

User:runner@runnervmlun5p
Working Directory:/home/runner/work/java-profiler/java-profiler/ddprof-lib/src/test/make
Command Line:make -j4 all
Clang Version:Ubuntu clang version 18.1.3 (1ubuntu1)
Date:Thu Sep 17 10:01:13 2026

Bug Summary

Bug TypeQuantityDisplay?
All Bugs1
Logic error
Dereference of null pointer1

Reports

Bug Group Bug Type ▾ File Function/Method Line Path Length
Logic errorDereference of null pointerfaultInjection.cppcrashNow242

dd-octo-sts Bot commented Sep 1, 2026 •
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CI Test Results

Run: #35208081255 | Commit: b6b97da | Duration: 15m 54s (longest job)

✅ All 32 test jobs passed

Status Overview

JDK glibc-aarch64/debug glibc-amd64/debug musl-aarch64/debug musl-amd64/debug
8 - ✅ - -
8-ibm - ✅ - -
8-j9 ✅ ✅ - -
8-librca - - ✅ ✅
8-orcl - ✅ - -
11 - ✅ - -
11-j9 ✅ ✅ - -
11-librca - - ✅ ✅
17 ✅ ✅ - -
17-graal ✅ ✅ - -
17-j9 ✅ ✅ - -
17-librca - - ✅ ✅
21 ✅ ✅ - -
21-graal ✅ ✅ - -
21-librca - - ✅ ✅
25 ✅ ✅ - -
25-graal ✅ ✅ - -
25-librca - - ✅ ✅

Legend: ✅ passed | ❌ failed | ⚪ skipped | 🚫 cancelled

Summary: Total: 32 | Passed: 32 | Failed: 0


Updated: 2026-09-17 10:19:00 UTC

dd-octo-sts Bot commented Sep 1, 2026 •
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❌ 39 passed, 1 failed out of 40 configurations

Test Matrix

Platform JDK 8 JDK 11 JDK 17 JDK 21 JDK 25
glibc-x64-hotspot ✅ ✅ ✅ ✅ ❌
glibc-x64-openj9 ✅ ✅ ✅ ✅ ✅
glibc-arm64-hotspot ✅ ✅ ✅ ✅ ✅
glibc-arm64-openj9 ✅ ✅ ✅ ✅ ✅
musl-x64-hotspot ✅ ✅ ✅ ✅ ✅
musl-x64-openj9 ✅ ✅ ✅ ✅ ✅
musl-arm64-hotspot ✅ ✅ ✅ ✅ ✅
musl-arm64-openj9 ✅ ✅ ✅ ✅ ✅

Failure Details

glibc-x64-hotspot-jdk25

Profiler-only:

"  Skipped (tracer not expected in this configuration)"
""
"[7/8] Checking for unexpected events..."
"  ? No unexpected events found"
""
"[8/8] Scenario-specific validation (ddprof_only)..."
"  Validating profiler-only scenario..."
"  ? Profiler-only scenario checks passed"
""
"=== Validation Summary ==="
"ExecutionSample:            0.0 events (datadog.ExecutionSample)"
"Stack traces:               0.0 samples"
"Thread diversity:           0.0 threads"
"Allocation samples:         0.0 events (jdk.ObjectAllocationSample)"
"ThreadAllocationStatistics: 43 events"
""
"VALIDATION_FAILED: One or more checks did not pass"

Script executed successfully: 425 commands
VALIDATION_FAILED: Validation checks did not pass

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datadog-official Bot commented Sep 17, 2026 •
edited by datadog-prod-us1-5 Bot
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✨ Unblock PR with BitsAI

❌ Errors

Your PR has failed checks. Please review the issues below and take necessary action before merging.

🚦 2 Pipeline jobs failed

DataDog/java-profiler | integration-test-x64-glibc: [hotspot, 25] — 🔧 Needs a code fix, caused by this PR

View more details · View in GitLab

DataDog/java-profiler | post-pr-comment — 🔧 Needs a code fix, caused by this PR

View more details · View in GitLab

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