[cherry-pick](branch-2.1)fix the mutil threads tests (apache#42669)

pick from master:
apache#39617

regression-test/suites/schema_change_p0/test_dup_schema_value_modify3.groovy

@@ -25,8 +25,6 @@ suite("test_dup_schema_value_modify3", "p0") {
     /**
      *  Test the dup model by modify a value type
      */
-    def initTable2 = ""
-    def initTableData2 = ""
     sql """ DROP TABLE IF EXISTS ${tbName1} """
     def initTable = " CREATE TABLE IF NOT EXISTS ${tbName1}\n" +
             "          (\n" +
@@ -53,7 +51,7 @@ suite("test_dup_schema_value_modify3", "p0") {
             "               (567890123, 'Eve', 0, 'Chengdu', 27, 0, 13572468091, 'No. 654 Street, Chengdu', '2022-05-05 18:00:00')," +
             "               (678901234, 'Frank', 1, 'Hangzhou', 32, 1, 13467985213, 'No. 321 Street, Hangzhou', '2022-06-06 20:00:00')," +
             "               (789012345, 'Grace', 0, 'Xian', 29, 0, 13333333333, 'No. 222 Street, Xian', '2022-07-07 22:00:00');"
-
+    def insertSql = ""
 
     /**
      *  Test the dup model by modify a value type from MAP to other type

regression-test/suites/schema_change_p0/test_dup_schema_value_modify4.groovy

@@ -17,7 +17,6 @@
 
 suite("test_dup_schema_value_modify4", "p0") {
     def tbName1 = "test_dup_model_value_change3"
-    def tbName2 = "test_dup_model_value_change_3"
 
     //Test the dup model by adding a value column
     sql """ DROP TABLE IF EXISTS ${tbName1} """
@@ -53,7 +52,6 @@ suite("test_dup_schema_value_modify4", "p0") {
     def errorMessage = ""
     def insertSql = "insert into ${tbName1} values(923456689, 'Alice', '四川省', 'Yaan', 25, 0, 13812345678, 'No. 123 Street, Beijing', '2022-01-01 10:00:00');"
 
-
     /**
      *  Test the dup model by modify a value type from MAP to other type
      */

regression-test/suites/schema_change_p0/test_unique_schema_key_change_add.groovy

@@ -46,7 +46,6 @@ suite("test_unique_schema_key_change_add","p0") {
              "               (567890123, 'Eve', 'Chengdu', 27, 0, 13572468091, 'No. 654 Street, Chengdu', '2022-05-05 18:00:00')," +
              "               (678901234, 'Frank', 'Hangzhou', 32, 1, 13467985213, 'No. 321 Street, Hangzhou', '2022-06-06 20:00:00')," +
              "               (789012345, 'Grace', 'Xian', 29, 0, 13333333333, 'No. 222 Street, Xian', '2022-07-07 22:00:00');"
-
      //Test the unique model by adding a key column with VARCHAR
      sql initTable
      sql initTableData

regression-test/suites/schema_change_p0/test_unique_schema_key_change_modify.groovy

@@ -52,7 +52,9 @@ suite("test_unique_schema_key_change_modify","p0") {
              "               (567890123, 'Eve', 0, 'Chengdu', 27, 0, 13572468091, 'No. 654 Street, Chengdu', '2022-05-05 18:00:00')," +
              "               (678901234, 'Frank', 1, 'Hangzhou', 32, 1, 13467985213, 'No. 321 Street, Hangzhou', '2022-06-06 20:00:00')," +
              "               (789012345, 'Grace', 0, 'Xian', 29, 0, 13333333333, 'No. 222 Street, Xian', '2022-07-07 22:00:00');"
-
+     def insertSql = ""
+     def initTable2 = ""
+     def initTableData2 = ""
      //TODO Test the unique model by modify a key type from BOOLEAN to TINYINT
      def errorMessage="errCode = 2, detailMessage = Can not change BOOLEAN to TINYINT"
      expectException({

regression-test/suites/schema_change_p0/test_unique_schema_value_drop.groovy

@@ -27,7 +27,6 @@ suite("test_unique_schema_value_drop", "p0") {
     def errorMessage = ""
     def insertSql = "insert into ${tbName} values(123456689, 'Alice', '四川省', 'Yaan', 25, 0, 13812345678, 'No. 123 Street, Beijing', '2022-01-01 10:00:00');"
 
-
     /**
      *  Test the unique model by drop a value type
      */

regression-test/suites/schema_change_p0/test_unique_schema_value_modify.groovy

@@ -56,7 +56,7 @@ suite("test_unique_schema_value_modify","p0") {
              "               (567890123, 'Eve', 0, 'Chengdu', 27, 0, 13572468091, 'No. 654 Street, Chengdu', '2022-05-05 18:00:00')," +
              "               (678901234, 'Frank', 1, 'Hangzhou', 32, 1, 13467985213, 'No. 321 Street, Hangzhou', '2022-06-06 20:00:00')," +
              "               (789012345, 'Grace', 0, 'Xian', 29, 0, 13333333333, 'No. 222 Street, Xian', '2022-07-07 22:00:00');"
-
+     def insertSql = ""
      //TODO Test the unique model by modify a value type from BOOLEAN to TINYINT
      errorMessage="errCode = 2, detailMessage = Can not change BOOLEAN to TINYINT"
      expectException({

regression-test/suites/schema_change_p0/test_unique_schema_value_modify2.groovy

@@ -18,6 +18,8 @@
 suite("test_unique_schema_value_modify2", "p0") {
     def tbName = "test_unique_model_value_change2"
     def tbName2 = "test_unique_model_value_change_2"
+    def initTable1 = ""
+    def initTableData1 = ""
     def on_write = getRandomBoolean()
     println String.format("current enable_unique_key_merge_on_write is : %s ",on_write)
     //Test the unique model by adding a value column