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Some fixes to connection pooling #7045

Merged
merged 2 commits into from
Feb 3, 2020
Merged

Some fixes to connection pooling #7045

merged 2 commits into from
Feb 3, 2020

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notnoop
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@notnoop notnoop commented Jan 31, 2020

Pick up some fixes from Consul:

  • If a stream returns an EOF error, clear session from cache/pool and start a new one.
  • Close the codec when closing StreamClient

Pick up some fixes from Consul:

* If a stream returns an EOF error, clear session from cache/pool and start a
new one.
* Close the codec when closing StreamClient
@notnoop notnoop added this to the 0.10.4 milestone Jan 31, 2020
@notnoop notnoop self-assigned this Jan 31, 2020
// new session next time
// See https://github.com/hashicorp/consul/blob/v1.6.3/agent/pool/pool.go#L471-L477
if lib.IsErrEOF(err) {
p.clearConn(conn)
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In getClient above on L406 we call release and clear in the opposite order. Looking at the code I don't think it matters and calling releaseConn doesn't even seem necessary if we're calling clearConn.

It might be nice to make the 2 clear+releaseConn cases the same, but it's not a blocker. I don't see any reason why either would be unsafe.

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@notnoop notnoop Feb 3, 2020

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Done - also your proposed order matches Consul's code too. Thanks for catching this.

This to be consistent with other connection clean up handler as well as consul's https://github.com/hashicorp/consul/blob/v1.6.3/agent/pool/pool.go#L468-L479 .
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2 participants