⚡ Bolt: HexFormat을 통한 바이트 배열 변환 성능 향상#58
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`DefaultDocumentConversionService` 파일의 `contentHash` 메서드 내에서 바이트 배열을 16진수 문자열로 변환할 때 사용하던 비효율적인 `String.format` 로직을 Java 21의 네이티브 클래스인 `java.util.HexFormat.of().formatHex(raw)`로 최적화했습니다.
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Pull request overview
OpenCode model attempts did not emit a usable current-head control block, so the approval gate used deterministic current-head evidence instead of model prose.
Findings
No blocking findings.
Summary
- Result: APPROVE
- Reason: coverage-evidence passed, peer GitHub Checks completed without failures, mergeability was clean, and no unresolved human review threads remained.
- Deterministic evidence: current-head changed-file evidence (.jules/bolt.md, src/main/java/com/clearfolio/viewer/service/DefaultDocumentConversionService.java); coverage-evidence result success; peer checks from statusCheckRollup excluding this OpenCode check.
- Model outcomes: primary=failed, fallback=failed, second_fallback=failed, catalog_fallback=unknown.
- Head SHA:
a86e672639659fd11dbc42b747ab1f5084aa65be - Workflow run: 28405183349
- Workflow attempt: 1
Deterministic fallback approval was used only after model-output instability and did not bypass coverage, failed-check, mergeability, or human-review gates.
Change Flow DAG
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
OpenCode Review Overview
Pull request overviewOpenCode exhausted the configured model pool without a usable current-head review conclusion. This is not approval evidence, so the PR is blocked until a source-backed review can establish approval sufficiency or identify concrete fixes. Findings1. HIGH .jules/bolt.md:1 - OpenCode could not establish approval sufficiency
Summary
No PR approval was posted because model-output failure is not evidence that the PR has no blockers. Changed-File Evidence Mapflowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
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There was a problem hiding this comment.
Pull request overview
OpenCode exhausted the configured model pool without a usable current-head review conclusion. This is not approval evidence, so the PR is blocked until a source-backed review can establish approval sufficiency or identify concrete fixes.
Findings
1. HIGH .jules/bolt.md:1 - OpenCode could not establish approval sufficiency
- Problem: every configured model path failed to produce a usable current-head control block.
- Root cause: model execution, timeout, export, normalization, or approval-gate validation did not complete after exponential retry across the configured model pool.
- Impact: approving from deterministic check state alone would miss PR-intent mismatches, missing files, edge-case bugs, robustness gaps, UX/DX regressions, security issues, and CodeGraph-backed base/head flow changes.
- Fix: rerun OpenCode after model availability recovers, or update the PR with the missing files, tests, docs, generated artifacts, and verification evidence needed for a source-backed review conclusion.
- Regression test: keep the approval gate posting REQUEST_CHANGES, not APPROVE or check-only failure, when no model produces a valid current-head review.
Summary
- Result: REQUEST_CHANGES
- Reason: coverage-evidence passed and peer GitHub Checks completed without failures, but no model produced a valid review control block.
- Deterministic evidence checked but not used for approval: current-head changed-file evidence (.jules/bolt.md, src/main/java/com/clearfolio/viewer/service/DefaultDocumentConversionService.java); coverage-evidence result success; peer checks from statusCheckRollup excluding this OpenCode check.
- Model outcome: model_pool=exhausted; selected_model=none.
- Head SHA:
a86e672639659fd11dbc42b747ab1f5084aa65be - Workflow run: 28460102451
- Workflow attempt: 1
No PR approval was posted because model-output failure is not evidence that the PR has no blockers.
Changed-File Evidence Map
flowchart LR
PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
Evidence --> S1["Changed file (2 files)"]
S1 --> I1["repository behavior"]
I1 --> R1["Review risk: Changed file (2 files)"]
R1 --> V1["required checks"]
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| ## 2026-06-29 - Use HexFormat for Byte Array to Hex String Conversion | |||
There was a problem hiding this comment.
HIGH OpenCode could not establish approval sufficiency
- Problem: the model pool exhausted without a valid current-head review control block, so this changed line cannot be approved from deterministic check state alone.
- Impact: PR-intent mismatches, missing files, robustness bugs, UX/DX regressions, and CodeGraph-backed flow changes could be missed.
- Fix: rerun OpenCode after model availability recovers, or add the missing source/test/docs/generated verification evidence needed for a source-backed approval.
- Verification: rerun the OpenCode Review workflow and confirm it emits APPROVE or source-backed REQUEST_CHANGES for this head SHA.
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중복 정리: 이 PR은 'HexFormat hex 변환 최적화' 클러스터의 중복입니다. 정본으로 #80 (APPROVED + CI green + MERGEABLE)을 유지합니다. 동일 파일을 수정해 동시 병합이 불가능하므로 정리합니다. 고유하게 필요한 변경이 있으면 #80에 반영하거나 재오픈하세요. |
알겠습니다. 이 PR은 중복으로 간주되어 정리되었으므로 작업을 중단하겠습니다. |
1 participant
💡 What
DefaultDocumentConversionService.java파일의contentHash메서드에서StringBuilder및 반복문 안의String.format을 사용하는 부분을 Java 21에 추가된java.util.HexFormat.of().formatHex(raw)로 교체했습니다. 더불어 향후 참고할 수 있도록.jules/bolt.md파일에 해당 최적화와 관련된 교훈을 기록했습니다.🎯 Why
반복문 안에서
String.format을 호출하면 지속적인 포맷 문자열 파싱과 불필요한 객체 할당이 발생하여 성능 저하의 원인이 됩니다.📊 Impact
이 최적화로 인하여 바이트 배열 변환 로직의 CPU 오버헤드와 가비지 컬렉션(GC) 압력이 줄어들고 전체적인 객체 생성 비용이 절약됩니다.
🔬 Measurement
mvn clean test및mvn -DskipTests checkstyle:check를 통해 모든 테스트가 기존과 동일하게 통과하고, 코드 스타일 검사를 성공적으로 통과함을 확인했습니다.PR created automatically by Jules for task 8597556840356474593 started by @seonghobae