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pre-checking: Reject failed PVFs (#6492)

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* pre-checking: Reject failed PVFs

* paras: immediately reject any PVF that cannot reach a supermajority

* Make the `quorum` reject condition a bit more clear semantically

* Add comment

* Update implementer's guide

* Update a link

Not related to the rest of the PR, but I randomly noticed and fixed this.

* Update runtime/parachains/src/paras/tests.rs

Co-authored-by: s0me0ne-unkn0wn <48632512+s0me0ne-unkn0wn@users.noreply.github.com>

* Remove unneeded loop

* Log PVF retries using `info!`

* Change retry logs to `warn!` and add preparation failure log

* Log PVF execution failure

* Clarify why we reject failed PVFs

* Fix PVF reject runtime benchmarks

Co-authored-by: s0me0ne-unkn0wn <48632512+s0me0ne-unkn0wn@users.noreply.github.com>
This commit is contained in:
Marcin S
2023-01-12 04:24:42 -05:00
committed by GitHub
parent ae74d33a93
commit 2efa3bab98
11 changed files with 126 additions and 74 deletions
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polkadot/node/core/pvf-checker/src/tests.rs
+16 -9
View File
@@ -157,7 +157,7 @@ impl TestState {
self.active_leaves_update(handle, Some(leaf), None, &[]).await
}
async fn deactive_leaves(
async fn deactivate_leaves(
&mut self,
handle: &mut VirtualOverseer,
deactivated: impl IntoIterator<Item = &Hash>,
@@ -894,8 +894,8 @@ fn unexpected_pvf_check_judgement() {
// Catch the pre-check request, but don't reply just yet.
let pre_check = test_state.expect_candidate_precheck(&mut handle).await;
// Now deactive the leaf and reply to the precheck request.
test_state.deactive_leaves(&mut handle, &[block_1.block_hash]).await;
// Now deactivate the leaf and reply to the precheck request.
test_state.deactivate_leaves(&mut handle, &[block_1.block_hash]).await;
pre_check.reply(PreCheckOutcome::Invalid);
// the subsystem must remain silent.
@@ -906,14 +906,17 @@ fn unexpected_pvf_check_judgement() {
});
}
// Check that we do not abstain for a nondeterministic failure. Currently, this means the behavior
// is the same as if the pre-check returned `PreCheckOutcome::Invalid`.
#[test]
fn abstain_for_nondeterministic_pvfcheck_failure() {
fn dont_abstain_for_nondeterministic_pvfcheck_failure() {
test_harness(|mut test_state, mut handle| {
async move {
let block_1 = FakeLeaf::new(dummy_hash(), 1, vec![dummy_validation_code_hash(1)]);
test_state
.activate_leaf_with_session(
&mut handle,
FakeLeaf::new(dummy_hash(), 1, vec![dummy_validation_code_hash(1)]),
block_1.clone(),
StartsNewSession { session_index: 2, validators: vec![OUR_VALIDATOR] },
)
.await;
@@ -922,10 +925,14 @@ fn abstain_for_nondeterministic_pvfcheck_failure() {
test_state.expect_session_for_child(&mut handle).await;
test_state.expect_validators(&mut handle).await;
test_state
.expect_candidate_precheck(&mut handle)
.await
.reply(PreCheckOutcome::Failed);
// Catch the pre-check request, but don't reply just yet.
let pre_check = test_state.expect_candidate_precheck(&mut handle).await;
// Now deactivate the leaf and reply to the precheck request.
test_state.deactivate_leaves(&mut handle, &[block_1.block_hash]).await;
pre_check.reply(PreCheckOutcome::Failed);
// the subsystem must remain silent.
test_state.send_conclude(&mut handle).await;
}