⚡ Bolt: InMemoryMultipartFile 바이트 배열 방어적 복사 제거를 통한 성능 최적화

[seonghobae]

💡 What: InMemoryMultipartFile.java의 getInputStream() 메서드에서 불필요한 바이트 배열 복사(Arrays.copyOf)를 제거했습니다.

🎯 Why: ByteArrayInputStream은 생성자에 전달된 바이트 배열을 내부적으로 수정하지 않고 읽기 전용으로만 사용합니다. 불필요하게 방어적 복사를 수행하면 업로드된 파일의 크기만큼 추가적인 메모리가 할당되고 GC에 부담을 줍니다. 이를 제거함으로써 메모리 사용량을 줄이고 성능을 개선했습니다.

📊 Impact: 파일 처리 시 메모리 할당량을 파일 크기만큼 절약하여 메모리 효율성을 크게 개선하고 GC 오버헤드를 줄였습니다.

🔬 Measurement: mvn -DskipTests compile 및 mvn org.jacoco:jacoco-maven-plugin:prepare-agent test org.jacoco:jacoco-maven-plugin:report 명령을 통해 모든 테스트가 통과되고 100% 코드 커버리지가 유지됨을 확인했습니다.

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PR created automatically by Jules for task 13506613091252565901 started by @seonghobae

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[opencode-agent]

OpenCode Review Overview

• Head SHA: c815ee74712cac2f54155494059f22ee75755258
• Workflow run: 29168311674
• Workflow attempt: 1
• Gate result: REQUEST_CHANGES (approval step)

Pull request overview

OpenCode reviewed the current-head mergeability evidence and changed-file flow before approval, then found merge conflicts on the affected path.

Findings

1. HIGH Merge Conflict Guidance - Resolve the PR branch against the latest base branch

• Problem: GitHub reports mergeStateStatus DIRTY for this pull request.
• Root cause: Branch perf-optimize-input-stream-13506613091252565901 cannot be merged cleanly into main; the changed-file flow below shows which review/runtime path is blocked by the conflict.
• Fix: Merge or rebase the latest main into perf-optimize-input-stream-13506613091252565901, resolve conflict markers in the PR branch, rerun the focused checks, and push the same branch.
• Repair commands:

gh pr checkout 143 --repo ContextualWisdomLab/clearfolio
git fetch origin main
git merge --no-ff origin/main  # or: git rebase origin/main
git status --short
# resolve files, then git add <resolved-files>
# merge path: git commit
# rebase path: git rebase --continue
git push origin HEAD:perf-optimize-input-stream-13506613091252565901
# rebase path only: git push --force-with-lease origin HEAD:perf-optimize-input-stream-13506613091252565901

• Regression test: Keep OpenCode approval gated on mergeability so model-output failures cannot approve a conflicted PR.

Merge Conflict Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]

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• Result: REQUEST_CHANGES
• Reason: mergeStateStatus is DIRTY; mergeable is CONFLICTING.
• Head SHA: c815ee74712cac2f54155494059f22ee75755258
• Workflow run: 29168311674
• Workflow attempt: 1

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 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]

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Merge Conflict Guidance

• Current merge state: DIRTY
• Base branch: main
• Head branch: perf-optimize-input-stream-13506613091252565901
• Fix direction: merge or rebase origin/main into perf-optimize-input-stream-13506613091252565901, resolve conflict markers in the changed files, rerun the focused checks, then push the same branch.
• Repair commands:

gh pr checkout 143 --repo ContextualWisdomLab/clearfolio
git fetch origin main
git merge --no-ff origin/main  # or: git rebase origin/main
git status --short
# resolve files, then git add <resolved-files>
# merge path: git commit
# rebase path: git rebase --continue
git push origin HEAD:perf-optimize-input-stream-13506613091252565901
# rebase path only: git push --force-with-lease origin HEAD:perf-optimize-input-stream-13506613091252565901

[github-actions]

Pull request overview

OpenCode reviewed the current-head mergeability evidence and changed-file flow before approval, then found merge conflicts on the affected path.

Findings

1. HIGH Merge Conflict Guidance - Resolve the PR branch against the latest base branch

• Problem: GitHub reports mergeStateStatus DIRTY for this pull request.
• Root cause: Branch perf-optimize-input-stream-13506613091252565901 cannot be merged cleanly into main; the changed-file flow below shows which review/runtime path is blocked by the conflict.
• Fix: Merge or rebase the latest main into perf-optimize-input-stream-13506613091252565901, resolve conflict markers in the PR branch, rerun the focused checks, and push the same branch.
• Repair commands:

gh pr checkout 143 --repo ContextualWisdomLab/clearfolio
git fetch origin main
git merge --no-ff origin/main  # or: git rebase origin/main
git status --short
# resolve files, then git add <resolved-files>
# merge path: git commit
# rebase path: git rebase --continue
git push origin HEAD:perf-optimize-input-stream-13506613091252565901
# rebase path only: git push --force-with-lease origin HEAD:perf-optimize-input-stream-13506613091252565901

• Regression test: Keep OpenCode approval gated on mergeability so model-output failures cannot approve a conflicted PR.

Merge Conflict Evidence Map

flowchart LR
  PR["PR changed files"] --> Evidence["OpenCode bounded evidence"]
  Evidence --> S1["Changed file (2 files)"]
  S1 --> I1["repository behavior"]
  I1 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]

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• Result: REQUEST_CHANGES
• Reason: mergeStateStatus is DIRTY; mergeable is CONFLICTING.
• Head SHA: c815ee74712cac2f54155494059f22ee75755258
• Workflow run: 29168311674
• Workflow attempt: 1

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 --> Conflict["Merge conflict blocks this path"]
  Conflict --> V1["required checks"]

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