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-rw-r--r--eth/downloader/downloader.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/eth/downloader/downloader.go b/eth/downloader/downloader.go
index 6ac58140a..13f3b11c9 100644
--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -1093,6 +1093,10 @@ func (d *Downloader) fetchParts(errCancel error, deliveryCh chan dataPack, deliv
throttled = true
break
}
+ // Short circuit if there is no more available task.
+ if pending() == 0 {
+ break
+ }
// Reserve a chunk of fetches for a peer. A nil can mean either that
// no more headers are available, or that the peer is known not to
// have them.