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eth/downloader: fix rollback issue on short chains #21472

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Aug 21, 2020
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eth/downloader: fix rollback issue on short chains #21472

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2 changes: 2 additions & 0 deletions eth/downloader/downloader.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1502,6 +1502,8 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
head := chunk[len(chunk)-1].Number.Uint64()
if head-rollback > uint64(fsHeaderSafetyNet) {
rollback = head - uint64(fsHeaderSafetyNet)
} else {
rollback = 1
}
}
// Unless we're doing light chains, schedule the headers for associated content retrieval
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