schedule: fix panic issue after delete the rule (tikv#2513) (tikv#2515)

Signed-off-by: nolouch <[email protected]>
lhy1024 · Jun 5, 2020 · 30f0b01 · 30f0b01
1 parent e88c246
commit 30f0b01
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/server/schedule/placement/fit.go b/server/schedule/placement/fit.go
@@ -59,6 +59,9 @@ func (f *RegionFit) GetRuleFit(peerID uint64) *RuleFit {
 // It returns 1 when the first fit result is better.
 func CompareRegionFit(a, b *RegionFit) int {
 	for i := range a.RuleFits {
+		if i >= len(b.RuleFits) {
+			break
+		}
 		if cmp := compareRuleFit(a.RuleFits[i], b.RuleFits[i]); cmp != 0 {
 			return cmp
 		}