twoeths

[fulu] Sync stuck due to peers returning 0 block for beacon_block_by_range request

9

### Describe the bug sync was stuck with this log ``` 2025-08-08 11:07:09.405 Aug-08 04:07:09.405[sync] debug: Downloaded batch id=Finalized-0, startEpoch=8, status=AwaitingProcessing, blocks=0, peer=16...mAswsc 2025-08-08 11:07:09.177 Aug-08 04:07:09.176[sync] verbose: Downloading batch...

[fulu] head sync to handle forky condition

1

### Describe the bug given this log, it shows that downloaded blocks are from one fork while downloaded sidecars are from another fork ``` Aug 14 08:19:19 devnet-ax41-1 beacon_run.sh[2827727]: Aug-14...

[block-input-refactor] consider download data columns from multiple peers at a time

4

### Describe the bug in BlockInputSync of #8200, when we request `data_column_sidecars_by_root`, it could take up to 10s because peer may only response when it has all data ### Expected...

### Describe the bug there are discrepancy of `validateGossipDataColumnSidecar`, for some first columns it takes ~20ms to ~50ms, for some last columns it takes up to 0.6s which make the...

gossipsub tracks disconnected peers

1

### Describe the bug starting from v1.34.0, lodestar target peer is 200 but gossip tracks more peers than that this issue happened starting v1.33.0, does not look like a leak...

Peer disconnected during identify protocol

1

### Describe the bug after #8188 I found too many "Peer disconnected during identify protocol" and it only happens on some specific peers on one of `fusaka-devnet-3` nodes: ``` grep...

### Describe the bug network processor "cannot accept work" is high in `fusaka-devnet-3` super nodes this is on a 1k hoodi node (which does not subscribe to all subnets) "regen...

**Motivation** - some duplicate messages were sent to lodestar to uncompress due to async validateReceivedMessage(), see #535 **Description** change validateReceivedMessage() implementation to be synchronous: - make `msgIdFn()` synchronous, switch to...

As debugged in lodestar https://github.com/ChainSafe/lodestar/issues/8629, lodestar has to uncompress ~180 DataColumnSidecars per slot while there should only be 128 this is because the `validateReceivedMessage()` function being async https://github.com/ChainSafe/js-libp2p-gossipsub/blob/afc85eeaaa401fe74de694b43ef79ac96936e672/src/index.ts#L1295 and gossipsub...

This log is found when I debug `peerdas-devnet-7` of lodestar: ``` May 27 08:19:36 devnet-ax41-1 beacon_run.sh[3840251]: @@@ asking for message 0xf5e58f78e37d852f4b88957562ac998fc192b3ca topic /eth2/82cb98a6/data_column_sidecar_3/ssz_snappy peer 16Uiu2HAmKo7eVTbfjUnKfKNTFM7MsGqUCnmFgrC9N5UfXVfUovc1 May 27 08:19:36 devnet-ax41-1 beacon_run.sh[3840251]:...