Does Envoy support per filter chain draining?

[shashankram]

My understanding has been that if a Listener with multiple filter chains is configured and a filter chain within the listener is updated, connections belonging to other filter chains but the same listener are also drained. Is this still the case?

Looking at a few PRs, I see that there has been some effort to support per filter chain draining:
#9205
#4540
#7246

Is this feature supported now?
What is the recommended listener configuration to drain connections per filter chain? Is a Filter Discovery Service (FDS) required?

[mattklein123]

This is almost complete and should work transparently once #10662 lands (albeit in an alpha state). cc @lambdai

[shashankram]

Thanks @mattklein123. To clarify, per filter chain draining would work without needing Filter Discovery Service - using a listener with multiple filter chains would transparently drain connections per filter chain?

[stale]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or other activity occurs. Thank you for your contributions.

[shashankram]

@lambdai is there an update on this?

[stale]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or other activity occurs. Thank you for your contributions.

[stale]

This issue has been automatically closed because it has not had activity in the last 37 days. If this issue is still valid, please ping a maintainer and ask them to label it as "help wanted". Thank you for your contributions.

[shashankram]

Checking again.

[vorishirne]

@shashankram I beleive filter chain draining is fixed. I read in some other issues.