Subscriptions sometimes skips events

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评估

难度
4/5
预计耗时
3-5 天
新手友好度
25/100
Issue 类型
缺陷
描述清晰度
需要澄清
活跃度
停滞
技术栈
csharp, mongodb, postgresql
领域
backend, databases

调研方向

The report describes missed EventHandler runs during bulk imports with a PostgreSQL EventStore and MongoDB handlers, but names no files, tests, or code entry points. Start by reading the subscription and checkpoint handling paths, then look for a way to reproduce the skipped event using the described setup. Done means identifying a reproducible cause and confirming handlers process every event; the issue has had no comment for 223 days.

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描述

help wanted postgres

I have a funny problem with my setup that is running with the Postgresql EventStore (using npgsql 7) and MongoDB EventHandlers (using MongoDB.Entities) that are really simple - basically only upserting data without any weird data modification along the way.

However, sometimes when loading a bunch of data (fx from importing data from a legacy application) the checkpoint store has passed through a specific event but the EventHandler has never been run. If I then reset the checkpoint to a lower value and restart the application the EventHandlers run fine and everything is up to date.

Any ideas on how to debug this further is much appreciated - I am working on a PoC sample to see if it can be replicated outside our environment

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C#
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