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Revert "ext_proc: Ext proc half close on destroy and defer reset till trailers received. (#37083)" #37639

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Additional Description:
This PR is suspected of causing instability in prod. The cause is not yet fully diagnosed, but it is reverted as a safety measure.

Risk Level: Low
Testing: Unit tests
Docs Changes: N/A
Release Notes: N/A
Platform Specific Features: N/A

… trailers received. (envoyproxy#37083)"

This reverts commit 0b90f64.

Signed-off-by: Yan Avlasov <[email protected]>
@LinMoskovitch
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Hi @yanavlasov,

I noticed that you reverted PR #37083 due to suspected instability in production. I’ve started seeing UNKNOWN gRPC errors and no_healthy_upstream logs in Envoy.

Before this upgrade, even when there were upstream issues, I didn’t encounter UNKNOWN gRPC status codes. I suspect that the stricter enforcement of trailers in PR #37083 might be contributing to this behavior in my environment.

Could you provide more details about the instability you experienced in production? For example:

  • Was it related to UNKNOWN gRPC status codes or issues with the upstream?
  • Did it manifest in specific external processors or all gRPC traffic?

Best regards,
Lin.

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4 participants