tests(ticdc): add exchange partition test to lossy DDL case (pingcap#…

…8912)

close pingcap#8686

tests/integration_tests/lossy_ddl/data/prepare.sql

@@ -164,6 +164,21 @@ INSERT INTO example15 (id, b)
 VALUES (1, -1);
 ALTER TABLE example15 MODIFY COLUMN b INT UNSIGNED;
 
+-- exchange partition
+CREATE TABLE example16
+(
+    a INT PRIMARY KEY
+) PARTITION BY RANGE ( a ) ( PARTITION p0 VALUES LESS THAN (6),PARTITION p1 VALUES LESS THAN (11),PARTITION p2 VALUES LESS THAN (21));
+INSERT INTO example16
+VALUES (1);
+CREATE TABLE example17
+(
+    a int primary key
+);
+INSERT INTO example17
+VALUES (18);
+ALTER TABLE example16 EXCHANGE PARTITION p2 WITH TABLE example17;
+
 CREATE TABLE `finish_mark`
 (
     id   INT PRIMARY KEY,

tests/integration_tests/lossy_ddl/run.sh

@@ -23,8 +23,8 @@ function check_lossy_ddl() {
 	row_logs=$(grep "BlackHoleSink: WriteEvents" "$1/cdc.log")
 	echo $row_logs
 	row_logs_count=$(grep "BlackHoleSink: WriteEvents" -c "$1/cdc.log")
-	if [[ "$row_logs_count" -ne 16 ]]; then
-		echo "can't found 16 row logs, got $row_logs_count"
+	if [[ "$row_logs_count" -ne 18 ]]; then
+		echo "can't found 18 row logs, got $row_logs_count"
 		exit 1
 	fi
 }