From 0201f4f87844564e25e5bc541aad39bee9dd88fa Mon Sep 17 00:00:00 2001
From: Feng Liyuan <darktemplar.f@gmail.com>
Date: Mon, 4 Nov 2019 15:30:40 +0800
Subject: [PATCH] kv: use last range if streaming response does not contain a
 range entry  (#13062)

---
 store/tikv/coprocessor.go | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/store/tikv/coprocessor.go b/store/tikv/coprocessor.go
index 68ccb27e0f..25bac38da5 100644
--- a/store/tikv/coprocessor.go
+++ b/store/tikv/coprocessor.go
@@ -765,10 +765,9 @@ func (worker *copIteratorWorker) handleCopStreamResult(bo *Backoffer, rpcCtx *RP
 			}
 			return worker.buildCopTasksFromRemain(bo, lastRange, task)
 		}
-		if resp.Range == nil {
-			return nil, errors.New("streaming response should contain a range entry")
+		if resp.Range != nil {
+			lastRange = resp.Range
 		}
-		lastRange = resp.Range
 	}
 }