From 179458efe93e868bb77135c95e52fd410e7a2bc1 Mon Sep 17 00:00:00 2001
From: frank <417329062@qq.com>
Date: Mon, 6 Sep 2021 16:20:23 +0800
Subject: [PATCH] index out of range

---
 extern/storage-sealing/commit_batch.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/extern/storage-sealing/commit_batch.go b/extern/storage-sealing/commit_batch.go
index 383562583dc..3a97f7d68a5 100644
--- a/extern/storage-sealing/commit_batch.go
+++ b/extern/storage-sealing/commit_batch.go
@@ -297,6 +297,10 @@ func (b *CommitBatcher) processBatch(cfg sealiface.Config) ([]sealiface.CommitBa
 		infos = append(infos, p.Info)
 	}
 
+	if len(infos) == 0 {
+		return nil, nil
+	}
+
 	sort.Slice(infos, func(i, j int) bool {
 		return infos[i].Number < infos[j].Number
 	})