[Bug]:connection was closed in the middle of operation

[hoky]

Do you need to file an issue?

• I have searched the existing issues and this bug is not already filed.
• I believe this is a legitimate bug, not just a question or feature request.

Describe the bug

{"log":"INFO: Merged: 北京市文物局~相关单位| 1+1\n","stream":"stderr","time":"2026-03-03T15:02:47.198900945Z"} {"log":"INFO: Chunks appended from relation:相关单位\n","stream":"stderr","time":"2026-03-03T15:02:47.731632851Z"} {"log":"INFO: Merged: 事中事后监管~江苏省文物局| 1+1\n","stream":"stderr","time":"2026-03-03T15:02:48.032326481Z"} {"log":"INFO: Merged:事中事后监管~河北省文物局| 1+1\n","stream":"stderr","time":"2026-03-03T15:02:48.835127626Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: ConnectionDoesNotExistError('connection was closed in the middle of operation')\n","stream":"stderr","time":"2026-03-03T15:02:49.148544175Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: InterfaceError('pool is closing')\n","stream":"stderr","time":"2026-03-03T15:02:49.166048127Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: InterfaceError('pool is closing')\n","stream":"stderr","time":"2026-03-03T15:02:49.166260435Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: InterfaceError('pool is closing')\n","stream":"stderr","time":"2026-03-03T15:02:49.277959634Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 2/10: ConnectionDoesNotExistError('connection was closed in the middle of operation')\n","stream":"stderr","time":"2026-03-03T15:02:49.658826083Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: ConnectionDoesNotExistError('connection was closed in the middle of operation')\n","stream":"stderr","time":"2026-03-03T15:02:49.664159502Z"} {"log":"WARNING: Could not create VECTOR extension: connection was closed in the middle of operation\n","stream":"stderr","time":"2026-03-03T15:02:50.356021483Z"} {"log":"WARNING: PostgreSQL transient connection issue on attempt 1/10: ConnectionDoesNotExistError('connection was closed in the middle of operation')\n","stream":"stderr","time":"2026-03-03T15:02:50.359633669Z"} {"log":"INFO: 113.215.188.209:15684 - \"GET / HTTP/1.1\" 307\n","stream":"stderr","time":"2026-03-03T16:39:39.933651304Z"} {"log":"INFO: 113.215.188.209:15684 - \"GET /webui HTTP/1.1\" 307\n","stream":"stderr","time":"2026-03-03T16:39:39.966201014Z"} {"log":"INFO: 113.215.189.13:20360 - \"GET / HTTP/1.1\" 307\n","stream":"stderr","time":"2026-03-03T17:05:07.441318151Z"}

不定期提示这个错误，出现这个错误后必须重启docker才能恢复正常。

此时Postgresql是可以正常连接的。

想知道可以通过监控/health的哪几个key值监控异常。

“total_mp_locks":0,
"pending_mp_cleanup":0,
"total_async_locks":5375,
"pending_async_cleanup":5100

各指什么意思？

Steps to reproduce

No response

Expected Behavior

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LightRAG Config Used

Paste your config here

Logs and screenshots

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Additional Information

• LightRAG Version:
• Operating System:
• Python Version:
• Related Issues:

[danielaskdd]

错误显示PG连接出现问题。最常的原因：

• PostgreSQL 实例重启/主备切换/容器重建。
• 网络抖动、LB/NAT 空闲连接回收、代理（如 Supavisor/PgBouncer）断链。
• 服务端主动终止会话（管理员操作、超时策略、连接资源压力）。