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v4.20.4

pingcap/autoflowv4.20.4Aug 20, 2026by swilly22

Upgrading?

What changed from v3.1.1 → v4.20.4?What's new in v0.5.8 after v4.20.4?

AI Summary

Fixes a SIGSEGV crash in replicas caused by divergence in UPDATE_EDGE/UPDATE_NODE effects and improves RDB decoding performance by removing full sync requirements.

Key Highlights

  • Fixed replica crash on UPDATE_EDGE/UPDATE_NODE divergence by triggering full resync instead of crashing
  • Improved RDB decoding performance by rebuilding transpose matrices incrementally
  • Exported new public APIs (Graph_EncodingVersion and Graph_GetDecoder) for external modules

New Features

  • Exported public APIs for graph encoding versioning and decoding

Full Release Notes

## What's Changed

### Bug Fixes
* fix(effects): stop replica SIGSEGV on UPDATE_EDGE/UPDATE_NODE divergence - replicas no longer crash when an effect references a node or edge that no longer exists locally; the mismatch is now detected and triggers a full resync instead (#2581)

### Performance
* remove full sync from decoder - transpose matrices are rebuilt incrementally as delta-matrix components are set during RDB decoding instead of forcing a full sync at the end, speeding up loading of persisted graphs (#2584)

### Improvements
* serializers: export Graph_EncodingVersion and Graph_GetDecoder - new public APIs let external modules (e.g. graph-offloading) stamp dumps with their encoding version and select the matching decoder on load (#2552)

**Full Changelog**: https://github.com/FalkorDB/FalkorDB/compare/v4.20.3...v4.20.4

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