We're about to completely change the wire format here... land one additional copy of the transport and tests as a hedge against bugs. Enable the hedge with an experiment.
Closes#38026
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/38026 from ctiller:legacy-admission 5a32bb105d
PiperOrigin-RevId: 692984545
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Closes#37901
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37901 from yijiem:dns-migration-chttp2-server-2 70d29b3b6c
PiperOrigin-RevId: 687466646
Currently the destructive reclaimer single threaded cancels existing requests, but we admit new rpcs on every channel (to be eventually cancelled, probably).
We've got evidence that this (shockingly) doesn't scale and senders can easily overwhelm and oom a server.
Instead under this experiment now we'll always reject new work under very high load, and allow the reclaimer to mop up any remaining work to get back to within bounds.
Closes#37927
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37927 from ctiller:fast_reject 835726473a
PiperOrigin-RevId: 686553599
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Closes#37853
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37853 from yijiem:dns-migration-chttp2-server b830720b20
PiperOrigin-RevId: 684631881
This was put in as a temporary kludge to carry us until `work_serializer_dispatch` was ready, however since #37637 this is a no-op for all known use cases (and I think it's time for `work_serializer_dispatch` to stick).
Closes#37851
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37851 from ctiller:tc 8ae59415bd
PiperOrigin-RevId: 683255110
All known flakes/bugs have been fixed.
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Closes#37839
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37839 from yousukseung:work_serializer_dispatch a82a068ebf
PiperOrigin-RevId: 681609545
This change adds an experiment to move time caching from `ExecCtx` (which is the wrong place for this mechanism) and moves it to the party update path (the expectation being that a single poll of a call is the granularity at which we expect time caching to be a useful optimization, whilst avoiding the unbounded hold times associated with the current mechanism).
This requires fixing up a few tests that grew to depend on time caching (would appreciate close eyes on the credentials test, as it's unclear to me why this is required or what the effect is).
This should also fix b/232544809.
Closes#37637
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37637 from ctiller:closer-to-the-sun 8bbde2d0bd
PiperOrigin-RevId: 672574762
The peer_state_based_framing experiment is not used. The other experiment has been rolled out to 100% in prod for a while now. The expiry date of a few other experiments are updated.
PiperOrigin-RevId: 662565880
Causes crashes during shutdown.
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Closes#37195
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37195 from yousukseung:work-serializer-dispatch-disable 781bc59384
PiperOrigin-RevId: 650741850
This allows CallTracers to be created with parameters dictated by
channel args.
For the moment, I've used the EventEngine `EndpointConfig` API to expose
the channel args here, so as to avoid directly exposing
`grpc_core::ChannelArgs`. We should determine a better API here before
we de-experimentalize the stats APIs.
Also add an experiment to be used in a subsequent PR.
PiperOrigin-RevId: 647730284
Flaky tests are fixed now.
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Closes#37061
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37061 from yousukseung:work-serializer-retry 610a8e0e1a
PiperOrigin-RevId: 647366412
…_serializer_dispatch
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Closes#36997
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36997 from yousukseung:work-serializer-dispatch c8976c4f02
PiperOrigin-RevId: 645153599
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Closes#36875
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36875 from yousukseung:reenable-work-serializer-dispatch da03e7d9df
PiperOrigin-RevId: 642347062
Reattempt enabling the Windows EventEngine client experiment, after fixing a race condition in connection establishment vs timeout.
Closes#36876
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36876 from drfloob:wineec 125f3a20d8
PiperOrigin-RevId: 642294760
Implements https://github.com/grpc/proposal/pull/429
Currently, the behavior of `GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA` blocks more pings from being sent if we are sending too many pings without a data/header frame being sent as well. The original intention of this channel arg was to play nice with proxies that have restrictive settings when it comes to pings. This causes awkwardness when configuring keepalive pings for transports with long lived streams with sparse communication. In such a case, gRPC Core would stop sending keepalive pings since no data/header frame is being sent, resulting in a situation where we are unable to detect whether the transport is alive or not.
This change adds an experiment "max_pings_wo_data_throttle" to modify the behavior of `GRPC_ARG_HTTP2_MAX_PINGS_WITHOUT_DATA` to throttle pings to a frequency of 1 minute instead of completely blocking pings when too many pings have been sent without data/header frames.
Closes#36374
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36374 from yashykt:ThrottlePings b5bd42a019
PiperOrigin-RevId: 638110795
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Closes#36286
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36286 from yijiem:enable-win-ee-dns 9276c47326
PiperOrigin-RevId: 635531420
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Closes#36509
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36509 from ctiller:transport-refs-3 2771a2b0e1
PiperOrigin-RevId: 633240374
This has been stable in CI since May 1st (over a week), zero flakes in EE client-enabled end2end tests.
Closes#36572
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36572 from drfloob:enable-win-ee-client 8f733316ee
PiperOrigin-RevId: 632233766
Also begin to eliminate `CallContext` in favor of just exposing `Call` - ultimately there's not really a need to introduce two types here, so I'm going to wind that idea back over a few PRs.
I've avoided making this an experiment as the changes required were quite structural.
Closes#36477
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36477 from ctiller:deadline-time 9856eeebe6
PiperOrigin-RevId: 629599230
The pick_first policy creates a list of subchannels for each resolver update and then iterates over the list, attempting to connect to each subchannel in turn, until one of them succeeds. However, once a subchannel does succeed, the policy unrefs the other subchannels but still retains a bunch of now-unnecessary state in the subchannel list itself. This wastes a bunch of memory, especially now that petiole policies are delegating to pick_first. This PR contains a new pick_first implementation that stops retaining that state, which significantly reduces per-channel memory.
There is one behavior change here, which is that if we have a connected subchannel and we get a resolver update that no longer includes that address, we now go IDLE instead of proactively trying to connect to the new addresses.
Closes#34766
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/34766 from markdroth:pick_first_free_memory_after_connecting 7236b4321f
PiperOrigin-RevId: 623887639
It looks like we're settling on moving this functionality into the channel itself - so removing the filter makes sense (especially since it had some significant bugs)
Closes#36213
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36213 from ctiller:x-ex 3040dcec95
PiperOrigin-RevId: 620996358
Remove rolled out experiments v3_compression_filter, v3_server_auth_filter; Extend WIP v3_channel_idle_filter for a bit, and extend work_serializer_clears_time_cache until OSS issues with work_serializer_dispatch are resolved.
Closes#36166
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36166 from ctiller:updat3 2c7223f63b
PiperOrigin-RevId: 619057925
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Closes#35992
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35992 from yousukseung:work-serializer-windows 7b21f46dde
PiperOrigin-RevId: 610042481
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Closes#35573
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35573 from yijiem:enable-oss-ee-dns-posix-real 1df91d1d84
PiperOrigin-RevId: 609193851
There is a continuous failure in the master/windows/bazel_rbe/grpc_bazel_rbe_opt tests. These generate a lot of noise at the moment, and may be hiding other issues, so they are being disabled in CI.
Closes#35952
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35952 from drfloob:ohnowindowspbcc 39ded8e8fa
PiperOrigin-RevId: 608688522
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Closes#35891
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35891 from yousukseung:work_serializer ca36cde216
PiperOrigin-RevId: 607380601
Craig Tiller
AJ Heller
Yijie Ma
Yousuk Seung
erm-g
Vignesh Babu
Yash Tibrewal
Mark D. Roth