PD OOM and `transport.(*serverHandlerTransport).HandleStreams.func5` continuously occupying memory.

Open

#9,649 opened on Aug 12, 2025 1 comment 0 reactions 0 assignees View on GitHub

needs-type

Description

PD OOM after upgrade to 8.5.2 and rolling restart

![Image](https://github.com/user-attachments/assets/6d2c9d79-5729-4ecf-9fcd-80c6b86e712b)

The root is 11G and 22G. And diff is from `transport.(*serverHandlerTransport).HandleStreams.func5`

![Image](https://github.com/user-attachments/assets/dc763326-e0b4-4867-9678-85dc9a5919aa)

![Image](https://github.com/user-attachments/assets/f4d28db7-c2d3-49ac-8e39-eb83668ba61b)

And the number of goroutine is stable

Grpc query is also stable

Http query is little

We do nothing and the memory drops after the Heartbeat latency decrease.

https://github.com/tikv/pd/issues/8882 seem related to this issue?

This issue has not been assessed yet.