From 7ce083d7be640e3415aa3a81cf04353b79e029a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=B1=B1=E5=B2=9A?=
 <36239017+YuJuncen@users.noreply.github.com>
Date: Wed, 26 Apr 2023 16:51:18 +0800
Subject: [PATCH] Revert "restore: split between tables (#42972)"

This reverts commit 36c59c756208621d650140ea1cd32a7a94c42364.
---
 br/pkg/restore/split.go      | 5 -----
 br/pkg/restore/split_test.go | 8 +++-----
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/br/pkg/restore/split.go b/br/pkg/restore/split.go
index 9ed66e2bed43a..e218313f2212f 100644
--- a/br/pkg/restore/split.go
+++ b/br/pkg/restore/split.go
@@ -385,11 +385,6 @@ func (rs *RegionSplitter) ScatterRegions(ctx context.Context, newRegions []*spli
 func getSplitKeys(rewriteRules *RewriteRules, ranges []rtree.Range, regions []*split.RegionInfo, isRawKv bool) map[uint64][][]byte {
 	splitKeyMap := make(map[uint64][][]byte)
 	checkKeys := make([][]byte, 0)
-	if rewriteRules != nil && len(rewriteRules.NewKeyspace) == 0 {
-		for _, rule := range rewriteRules.Data {
-			checkKeys = append(checkKeys, rule.NewKeyPrefix)
-		}
-	}
 	for _, rg := range ranges {
 		checkKeys = append(checkKeys, rg.EndKey)
 	}
diff --git a/br/pkg/restore/split_test.go b/br/pkg/restore/split_test.go
index 3bf6211c61f5f..de35cc3ab4c3c 100644
--- a/br/pkg/restore/split_test.go
+++ b/br/pkg/restore/split_test.go
@@ -479,12 +479,10 @@ func initRewriteRules() *restore.RewriteRules {
 
 // expected regions after split:
 //
-//	[aa, aay), [aay, bba), [bba, bbf), [bbf, bbh), [bbh, bbj),
-//	[bbj, cca), [cca, xx), [xx, xxe), [xxe, xxz), [xxz, )
-//
-// Please note that "aa" has been rewritten to "xx", so the "bb" rewrite rule split point won't be included.
+//	[, aay), [aay, bba), [bba, bbf), [bbf, bbh), [bbh, bbj),
+//	[bbj, cca), [cca, xxe), [xxe, xxz), [xxz, )
 func validateRegions(regions map[uint64]*split.RegionInfo) bool {
-	keys := [...]string{"", "aay", "bba", "bbf", "bbh", "bbj", "cca", "xx", "xxe", "xxz", ""}
+	keys := [...]string{"", "aay", "bba", "bbf", "bbh", "bbj", "cca", "xxe", "xxz", ""}
 	return validateRegionsExt(regions, keys[:], false)
 }