René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[BUG] Header-sync start-up timeout blocks entire node for 10 min","articleBody":"**Problem**\nOn eden-mainnet, a full node trying to connect to the sequencer with p2p sync hangs for the full 10-minute timeout inside HeaderSyncService.Init() and is unusable during that period.\n\n\nNon aggregator node logs :\n```\nINF headers not yet available from peers, waiting to initialize header sync\nerror=\"failed to fetch height 452756 from peers: header: not found\"\ncomponent=HeaderSyncService retry_in=1000\n```\n\nThe node is blocked even though other sub-services (e.g. DataSync) are ready to proceed.\n\n**Root-cause**\nThe hard-coded 10-minute timeout in:\n\nhttps://github.com/evstack/ev-node/blob/main/pkg/sync/sync_service.go#L356-L357\n\nis applied synchronously during service start-up.\nIf no peer currently advertises that height, the whole service (and therefore the node) waits until the timeout expires before it marks itself as “initialized”.\n\n**Expected behaviour**\nHeader-sync should never block node start-up.\nIf the header is missing, the service should:\n\n- mark itself as “degraded” but running,\n- keep retrying in the background,\n- let dependent services decide whether they can already proceed.\n\n","author":{"url":"https://github.com/auricom","@type":"Person","name":"auricom"},"datePublished":"2026-01-19T13:55:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/2994/ev-node/issues/2994"}