From aef9db4b3bbd06d7dfc8b725373ad4241634b33a Mon Sep 17 00:00:00 2001
From: disksing <i@disksing.com>
Date: Wed, 24 May 2017 12:44:26 +0800
Subject: [PATCH] store/tikv: add log. (#3318)

---
 store/tikv/region_cache.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/store/tikv/region_cache.go b/store/tikv/region_cache.go
index 59051de9d4..aefd97a7cb 100644
--- a/store/tikv/region_cache.go
+++ b/store/tikv/region_cache.go
@@ -416,6 +416,8 @@ func (c *RegionCache) OnRequestFail(ctx *RPCContext) {
 	delete(c.storeMu.stores, storeID)
 	c.storeMu.Unlock()
 
+	log.Warnf("drop regions from cache due to request fail, storeID: %v", storeID)
+
 	c.mu.Lock()
 	for id, r := range c.mu.regions {
 		if r.peer.GetStoreId() == storeID {