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| author | Péter Szilágyi <peterke@gmail.com> | 2018-10-03 18:42:19 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-10-03 18:42:19 +0800 |
| commit | 14bef9a2dba1f6370c694779962e742e9853fdc6 (patch) | |
| tree | dc38694ed218338785811b51a6f43b4622e5c74d /core | |
| parent | d3a773c284103401090c4c806d6641d6f6fddcf5 (diff) | |
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core: fix unnecessary ancestor lookup after a fast sync (#17825)
Diffstat (limited to 'core')
| -rw-r--r-- | core/chain_indexer.go | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/core/chain_indexer.go b/core/chain_indexer.go index 4bdd4ba1c..28dc47668 100644 --- a/core/chain_indexer.go +++ b/core/chain_indexer.go @@ -219,13 +219,13 @@ func (c *ChainIndexer) eventLoop(currentHeader *types.Header, events chan ChainE } header := ev.Block.Header() if header.ParentHash != prevHash { - // Reorg to the common ancestor (might not exist in light sync mode, skip reorg then) + // Reorg to the common ancestor if needed (might not exist in light sync mode, skip reorg then) // TODO(karalabe, zsfelfoldi): This seems a bit brittle, can we detect this case explicitly? - // TODO(karalabe): This operation is expensive and might block, causing the event system to - // potentially also lock up. We need to do with on a different thread somehow. - if h := rawdb.FindCommonAncestor(c.chainDb, prevHeader, header); h != nil { - c.newHead(h.Number.Uint64(), true) + if rawdb.ReadCanonicalHash(c.chainDb, prevHeader.Number.Uint64()) != prevHash { + if h := rawdb.FindCommonAncestor(c.chainDb, prevHeader, header); h != nil { + c.newHead(h.Number.Uint64(), true) + } } } c.newHead(header.Number.Uint64(), false) |