Pain map
What breaks in document AI
290 production incidents from public threads. Every quote links to its source. Pick a category and check it yourself.
Duplicate entities and aliases
8 of 8 quotes
“duplicated content crowds out other material in the rate-limited reduce step.”
GitHub, graphrag · 25 September 2026 · open the thread “FalkorDB's fulltext index (RediSearch) splits Korean on whitespace only”
GitHub, graphiti · 8 September 2026 · open the thread “Entity nodes with the *exact same name* (same `group_id`, identical string) are not being merged by dedup, resulting in duplicate nodes accumulating over time.”
GitHub, graphiti · 5 August 2026 · in production · open the thread “Differences in capitalization, spacing, or language may create separate nodes for the same entity, for example: System Admin system admin SystemAdmin 系统管理员”
GitHub, LightRAG · 3 August 2026 · open the thread “For production environments with large datasets (costly to rebuild), this is a critical bug”
GitHub, cognee · 28 March 2026 · in production · open the thread Hit this one too? We are building for it. Join the waitlist.
“I spent so much time messing with fuzzy matching libraries and NERs for various entity resolution tasks”
Hacker News · 24 March 2026 · open the thread “With ~300+ episodes across multiple knowledge groups, resolution calls hit `Output length exceeded max tokens 16384` consistently”
GitHub, graphiti · 26 February 2026 · open the thread “Duplicates are categorized as new relationships temporally replacing the older one.”
GitHub, graphiti · 10 December 2025 · open the thread Hit this one too? We are building for it. Join the waitlist.
Method
We collected 448 public posts published after 1 November 2025 in which a builder describes document AI failing. Each link was re-opened on 8 November 2026. We kept the 290 where the quote is on the page, the author describes an incident and not an opinion, and has no tie to a vendor. Quotes are verbatim and trimmed after 420 characters. The grouping is ours. A complaint is not a measurement.