From 05c65a9a3f688144559b34217d33ff35e249fe08 Mon Sep 17 00:00:00 2001
From: ti-srebot <66930949+ti-srebot@users.noreply.github.com>
Date: Fri, 10 Jul 2020 14:30:56 +0800
Subject: [PATCH] ddl: fix admin repair table will reload fail on the other
 node (#18285) (#18323)

---
 infoschema/builder.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/infoschema/builder.go b/infoschema/builder.go
index 51c7ee6826ccf..1d2e36d3e8c91 100644
--- a/infoschema/builder.go
+++ b/infoschema/builder.go
@@ -56,7 +56,7 @@ func (b *Builder) ApplyDiff(m *meta.Meta, diff *model.SchemaDiff) ([]int64, erro
 	}
 	var oldTableID, newTableID int64
 	switch diff.Type {
-	case model.ActionCreateTable, model.ActionCreateSequence, model.ActionRecoverTable, model.ActionRepairTable:
+	case model.ActionCreateTable, model.ActionCreateSequence, model.ActionRecoverTable:
 		newTableID = diff.TableID
 	case model.ActionDropTable, model.ActionDropView, model.ActionDropSequence:
 		oldTableID = diff.TableID
@@ -74,7 +74,12 @@ func (b *Builder) ApplyDiff(m *meta.Meta, diff *model.SchemaDiff) ([]int64, erro
 	// We try to reuse the old allocator, so the cached auto ID can be reused.
 	var allocs autoid.Allocators
 	if tableIDIsValid(oldTableID) {
-		if oldTableID == newTableID && diff.Type != model.ActionRenameTable {
+		if oldTableID == newTableID && diff.Type != model.ActionRenameTable &&
+			// For repairing table in TiDB cluster, given 2 normal node and 1 repair node.
+			// For normal node's information schema, repaired table is existed.
+			// For repair node's information schema, repaired table is filtered (couldn't find it in `is`).
+			// So here skip to reserve the allocators when repairing table.
+			diff.Type != model.ActionRepairTable {
 			oldAllocs, _ := b.is.AllocByID(oldTableID)
 			allocs = filterAllocators(diff, oldAllocs)
 		}