etcdclient: leases keep alive halted: etcdserver: request timed out

[zimulala]

I want to use the interface of NewSession in clientv3 to new a session. But I encountered a problem in the certain case.
The result of NewSession always failed and reported "etcdclient: leases keep alive halted: etcdserver: request timed out".
I think it's because the etcd server occurs an ErrTimeout, the log content is "[warning] etcdserver: [timed out waiting for read index response]". Then it makes the client's channel of donec closed in recvKeepaliveLoop function. And makes the execution result fail.
I think it's unreasonable. In my opinion, handle it in one way that closes the client when the keepalive is halted, or another way that provides an interface which can restart the recvKeepaliveLoop.

[gyuho]

etcd server occurs an ErrTimeout, the log content is "[warning] etcdserver: [timed out waiting for read index response]"

Means etcdserver is not responding?

And why not just retry in for-loop?

[zimulala]

No. I mean the etcdserver returns the ErrTimeout to the client, and I retry NewSession.
But I think the recvKeepaliveLoop is returned and donec is closed when the etcdserver returns ErrTimeout as a response. So it is useless to try NewSession again.

[gyuho]

What is recvKeepaliveLoop? Please provide reproducible code snippet.

[zimulala]

It is fixed in the master branch.

[zimulala]

@gyuho Thanks！
RP #7890