Security and Performance Fixes for Multi-node Stream Management#72
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inureyes merged 4 commits intofeat/streaming-phase2from Oct 30, 2025
Merged
Security and Performance Fixes for Multi-node Stream Management#72inureyes merged 4 commits intofeat/streaming-phase2from
inureyes merged 4 commits intofeat/streaming-phase2from
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…Priority: CRITICAL - Implement RollingBuffer with MAX_BUFFER_SIZE (10MB per stream) - Automatically discard old data when buffer exceeds limit - Add overflow warnings to track dropped data - Protect against memory DoS attacks from unbounded output This prevents OOM crashes when nodes produce large amounts of output (e.g., 100 nodes × 100MB = 10GB RAM exhaustion attack)
…ns - Priority: CRITICAL - Implement global Mutex locks for stdout/stderr using once_cell::Lazy - Create NodeOutputWriter for atomic, prefixed output per node - Replace all println!/eprintln! with synchronized versions - Batch write multiple lines while holding lock to prevent interleaving - Add error handling for write failures with logging This prevents output corruption when multiple nodes write simultaneously, ensuring clean, readable output even under high concurrency.
…ty: HIGH - Validate output directory exists and is a directory - Check write permissions before processing - Create test file to verify writability - Add error handling for file write operations - Continue processing other nodes on individual write failures - Log clear error messages with paths and reasons This prevents crashes from permission errors, full disks, or invalid paths, providing graceful degradation and clear error messages to users.
- Add CleanupGuard with Drop trait for semaphore permit release - Track all channel senders for proper cleanup - Explicitly drop channels after task completion - Handle task panics gracefully without affecting other nodes - Add debug/error logging for all failure paths - Ensure resources are freed even on panic/error paths This prevents resource leaks from unclosed channels and unreleased permits, improving reliability under error conditions and preventing gradual degradation.
inureyes
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status:done
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🔒 Security & Performance Fixes for PR #71
This PR contains critical security and performance fixes identified during review of the Phase 2 streaming implementation.
Critical Fixes (SECURITY)
High Priority Fixes
Implementation Details
1. Memory Protection (stream_manager.rs)
2. Output Synchronization (output_sync.rs)
3. File System Validation (parallel.rs)
4. Resource Cleanup (parallel.rs)
Testing
All changes have been tested and compile without warnings. The fixes maintain backward compatibility while significantly improving reliability and security.
Commits