Single lookup improvements (#5488)

* Fix unexpected `UnrequestedBlobId` and `ExtraBlocksReturned` errors due to race conditions.

* Continue chain segment processing and skip any blocks that are already known, rather than returning an error.

* more de-dup checking

* ensure we don't reset `requested_ids` during rpc download

* better fix

* Merge branch 'unstable' of https://github.com/sigp/lighthouse into more-dup-lookup-fixes

* remove chain hash check

* Merge branch 'fix-block-lookup-race' of https://github.com/jimmygchen/lighthouse into sean-test-lookups

* remove block check

* add back tests

* Log and CI fixes

* undue extra check

* Merge branch 'sean-test-lookups' of https://github.com/realbigsean/lighthouse into sean-test-lookups

* log improvements

* Improve logging

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -2796,6 +2796,12 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                             }
                         }
                     }
+                    Err(BlockError::BlockIsAlreadyKnown(block_root)) => {
+                        debug!(self.log,
+                            "Ignoring already known blocks while processing chain segment";
+                            "block_root" => ?block_root);
+                        continue;
+                    }
                     Err(error) => {
                         return ChainSegmentResult::Failed {
                             imported_blocks,
@@ -3032,7 +3038,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         match import_block.await {
             // The block was successfully verified and imported. Yay.
             Ok(status @ AvailabilityProcessingStatus::Imported(block_root)) => {
-                trace!(
+                debug!(
                     self.log,
                     "Beacon block imported";
                     "block_root" => ?block_root,
@@ -3045,7 +3051,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 Ok(status)
             }
             Ok(status @ AvailabilityProcessingStatus::MissingComponents(slot, block_root)) => {
-                trace!(
+                debug!(
                     self.log,
                     "Beacon block awaiting blobs";
                     "block_root" => ?block_root,

beacon_node/beacon_chain/src/block_verification_types.rs

@@ -7,6 +7,7 @@ use crate::{get_block_root, GossipVerifiedBlock, PayloadVerificationOutcome};
 use derivative::Derivative;
 use ssz_types::VariableList;
 use state_processing::ConsensusContext;
+use std::fmt::{Debug, Formatter};
 use std::sync::Arc;
 use types::blob_sidecar::{BlobIdentifier, BlobSidecarError, FixedBlobSidecarList};
 use types::{
@@ -27,13 +28,19 @@ use types::{
 /// Note: We make a distinction over blocks received over gossip because
 /// in a post-deneb world, the blobs corresponding to a given block that are received
 /// over rpc do not contain the proposer signature for dos resistance.
-#[derive(Debug, Clone, Derivative)]
+#[derive(Clone, Derivative)]
 #[derivative(Hash(bound = "E: EthSpec"))]
 pub struct RpcBlock<E: EthSpec> {
     block_root: Hash256,
     block: RpcBlockInner<E>,
 }
 
+impl<E: EthSpec> Debug for RpcBlock<E> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "RpcBlock({:?})", self.block_root)
+    }
+}
+
 impl<E: EthSpec> RpcBlock<E> {
     pub fn block_root(&self) -> Hash256 {
         self.block_root

beacon_node/beacon_chain/src/data_availability_checker.rs

@@ -110,8 +110,6 @@ impl<T: BeaconChainTypes> DataAvailabilityChecker<T> {
         self.processing_cache.read().get(&block_root).cloned()
     }
 
-    /// A `None` indicates blobs are not required.
-    ///
     /// If there's no block, all possible ids will be returned that don't exist in the given blobs.
     /// If there no blobs, all possible ids will be returned.
     pub fn get_missing_blob_ids<V: AvailabilityView<T::EthSpec>>(

beacon_node/network/src/network_beacon_processor/sync_methods.rs

@@ -117,6 +117,7 @@ impl<T: BeaconChainTypes> NetworkBeaconProcessor<T> {
                 "Gossip block is being processed";
                 "action" => "sending rpc block to reprocessing queue",
                 "block_root" => %block_root,
+                "process_type" => ?process_type,
             );
 
             // Send message to work reprocess queue to retry the block
@@ -149,6 +150,7 @@ impl<T: BeaconChainTypes> NetworkBeaconProcessor<T> {
             "proposer" => block.message().proposer_index(),
             "slot" => block.slot(),
             "commitments" => commitments_formatted,
+            "process_type" => ?process_type,
         );
 
         let result = self
@@ -418,7 +420,11 @@ impl<T: BeaconChainTypes> NetworkBeaconProcessor<T> {
                         }
                     }
                     (imported_blocks, Ok(_)) => {
-                        debug!(self.log, "Parent lookup processed successfully");
+                        debug!(
+                            self.log, "Parent lookup processed successfully";
+                            "chain_hash" => %chain_head,
+                            "imported_blocks" => imported_blocks
+                        );
                         BatchProcessResult::Success {
                             was_non_empty: imported_blocks > 0,
                         }

beacon_node/network/src/sync/block_lookups/common.rs

@@ -380,7 +380,7 @@ impl<L: Lookup, T: BeaconChainTypes> RequestState<L, T> for BlobRequestState<L,
                 let received_id = blob.id();
                 if !self.requested_ids.contains(&received_id) {
                     self.state.register_failure_downloading();
-                    Err(LookupVerifyError::UnrequestedBlobId)
+                    Err(LookupVerifyError::UnrequestedBlobId(received_id))
                 } else {
                     // State should remain downloading until we receive the stream terminator.
                     self.requested_ids.remove(&received_id);

beacon_node/network/src/sync/block_lookups/mod.rs

@@ -152,6 +152,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
             if let Some(components) = child_components {
                 lookup.add_child_components(components);
             }
+            debug!(self.log, "Already searching for block"; "block_root" => ?block_root);
             return;
         }
 
@@ -162,6 +163,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
 
             // If the block was already downloaded, or is being downloaded in this moment, do not
             // request it.
+            debug!(self.log, "Already searching for block in a parent lookup request"; "block_root" => ?block_root);
             return;
         }
 
@@ -171,6 +173,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
             .any(|(hashes, _last_parent_request)| hashes.contains(&block_root))
         {
             // we are already processing this block, ignore it.
+            debug!(self.log, "Already processing block in a parent request"; "block_root" => ?block_root);
             return;
         }
 
@@ -221,15 +224,23 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
         }) {
             parent_lookup.add_peer(peer_id);
             // we are already searching for this block, ignore it
+            debug!(self.log, "Already searching for parent block";
+                "block_root" => ?block_root, "parent_root" => ?parent_root);
             return;
         }
 
         if self
             .processing_parent_lookups
-            .values()
+            .iter()
-            .any(|(hashes, _peers)| hashes.contains(&block_root) || hashes.contains(&parent_root))
+            .any(|(chain_hash, (hashes, _peers))| {
+                chain_hash == &block_root
+                    || hashes.contains(&block_root)
+                    || hashes.contains(&parent_root)
+            })
         {
             // we are already processing this block, ignore it.
+            debug!(self.log, "Already processing parent block";
+                "block_root" => ?block_root, "parent_root" => ?parent_root);
             return;
         }
         let parent_lookup = ParentLookup::new(
@@ -298,6 +309,12 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
         };
 
         let expected_block_root = lookup.block_root();
+        debug!(self.log,
+            "Peer returned block for single lookup";
+            "peer_id" => %peer_id ,
+            "id" => ?id,
+            "block_root" => ?expected_block_root,
+        );
 
         match self.single_lookup_response_inner::<R>(peer_id, response, seen_timestamp, cx, lookup)
         {
@@ -478,6 +495,13 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
             return;
         };
 
+        debug!(self.log,
+            "Peer returned block for parent lookup";
+            "peer_id" => %peer_id ,
+            "id" => ?id,
+            "block_root" => ?parent_lookup.current_parent_request.block_request_state.requested_block_root,
+        );
+
         match self.parent_lookup_response_inner::<R>(
             peer_id,
             response,
@@ -540,7 +564,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
             | ParentVerifyError::NoBlockReturned
             | ParentVerifyError::NotEnoughBlobsReturned
             | ParentVerifyError::ExtraBlocksReturned
-            | ParentVerifyError::UnrequestedBlobId
+            | ParentVerifyError::UnrequestedBlobId(_)
             | ParentVerifyError::ExtraBlobsReturned
             | ParentVerifyError::InvalidIndex(_) => {
                 let e = e.into();
@@ -728,6 +752,8 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
             "Block component processed for lookup";
             "response_type" => ?R::response_type(),
             "block_root" => ?root,
+            "result" => ?result,
+            "id" => target_id,
         );
 
         match result {
@@ -1223,7 +1249,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
     ) -> Result<(), LookupRequestError> {
         match cx.beacon_processor_if_enabled() {
             Some(beacon_processor) => {
-                trace!(self.log, "Sending block for processing"; "block" => ?block_root, "process" => ?process_type);
+                debug!(self.log, "Sending block for processing"; "block" => ?block_root, "process" => ?process_type);
                 if let Err(e) = beacon_processor.send_rpc_beacon_block(
                     block_root,
                     block,

beacon_node/network/src/sync/block_lookups/parent_lookup.rs

@@ -12,6 +12,7 @@ use std::collections::VecDeque;
 use std::sync::Arc;
 use store::Hash256;
 use strum::IntoStaticStr;
+use types::blob_sidecar::BlobIdentifier;
 
 /// How many attempts we try to find a parent of a block before we give up trying.
 pub(crate) const PARENT_FAIL_TOLERANCE: u8 = 5;
@@ -36,7 +37,7 @@ pub enum ParentVerifyError {
     NoBlockReturned,
     NotEnoughBlobsReturned,
     ExtraBlocksReturned,
-    UnrequestedBlobId,
+    UnrequestedBlobId(BlobIdentifier),
     ExtraBlobsReturned,
     InvalidIndex(u64),
     PreviousFailure { parent_root: Hash256 },
@@ -242,7 +243,7 @@ impl From<LookupVerifyError> for ParentVerifyError {
             E::RootMismatch => ParentVerifyError::RootMismatch,
             E::NoBlockReturned => ParentVerifyError::NoBlockReturned,
             E::ExtraBlocksReturned => ParentVerifyError::ExtraBlocksReturned,
-            E::UnrequestedBlobId => ParentVerifyError::UnrequestedBlobId,
+            E::UnrequestedBlobId(blob_id) => ParentVerifyError::UnrequestedBlobId(blob_id),
             E::ExtraBlobsReturned => ParentVerifyError::ExtraBlobsReturned,
             E::InvalidIndex(index) => ParentVerifyError::InvalidIndex(index),
             E::NotEnoughBlobsReturned => ParentVerifyError::NotEnoughBlobsReturned,

beacon_node/network/src/sync/block_lookups/single_block_lookup.rs

@@ -16,7 +16,7 @@ use std::marker::PhantomData;
 use std::sync::Arc;
 use store::Hash256;
 use strum::IntoStaticStr;
-use types::blob_sidecar::FixedBlobSidecarList;
+use types::blob_sidecar::{BlobIdentifier, FixedBlobSidecarList};
 use types::EthSpec;
 
 #[derive(Debug, PartialEq, Eq)]
@@ -31,7 +31,7 @@ pub enum LookupVerifyError {
     RootMismatch,
     NoBlockReturned,
     ExtraBlocksReturned,
-    UnrequestedBlobId,
+    UnrequestedBlobId(BlobIdentifier),
     ExtraBlobsReturned,
     NotEnoughBlobsReturned,
     InvalidIndex(u64),
@@ -257,7 +257,9 @@ impl<L: Lookup, T: BeaconChainTypes> SingleBlockLookup<L, T> {
     /// of which blobs still need to be requested. Returns `true` if there are no more blobs to
     /// request.
     pub(crate) fn blobs_already_downloaded(&mut self) -> bool {
+        if matches!(self.blob_request_state.state.state, State::AwaitingDownload) {
             self.update_blobs_request();
+        }
         self.blob_request_state.requested_ids.is_empty()
     }
 

beacon_node/network/src/sync/block_lookups/tests.rs

@@ -1803,6 +1803,7 @@ mod deneb_only {
             .expect_blobs_request()
             .expect_no_block_request();
     }
+
     #[test]
     fn too_few_blobs_response_then_block_response_attestation() {
         let Some(tester) = DenebTester::new(RequestTrigger::AttestationUnknownBlock) else {