diff --git a/regression-test/suites/backup_restore/test_backup_restore.groovy b/regression-test/suites/backup_restore/test_backup_restore.groovy
index 68f73f6892..2775a0a11b 100644
--- a/regression-test/suites/backup_restore/test_backup_restore.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore.groovy
@@ -68,7 +68,7 @@ suite("test_backup_restore", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_alias.groovy b/regression-test/suites/backup_restore/test_backup_restore_alias.groovy
index 57851fa824..6ecf0f9ddf 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_alias.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_alias.groovy
@@ -70,7 +70,7 @@ suite("test_backup_restore_alias", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_db.groovy b/regression-test/suites/backup_restore/test_backup_restore_db.groovy
index 7f3c6e5f83..780b322a21 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_db.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_db.groovy
@@ -76,7 +76,7 @@ suite("test_backup_restore_db", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_diff_repo_same_snapshot.groovy b/regression-test/suites/backup_restore/test_backup_restore_diff_repo_same_snapshot.groovy
index 19e2e2fd04..da5fe12df1 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_diff_repo_same_snapshot.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_diff_repo_same_snapshot.groovy
@@ -89,7 +89,7 @@ suite("test_backup_restore_diff_repo_same_snapshot", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
@@ -112,7 +112,7 @@ suite("test_backup_restore_diff_repo_same_snapshot", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_dup_without_default_keys.groovy b/regression-test/suites/backup_restore/test_backup_restore_dup_without_default_keys.groovy
index 0266e73eaa..c0f6a12f97 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_dup_without_default_keys.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_dup_without_default_keys.groovy
@@ -69,7 +69,7 @@ suite("test_backup_restore_dup_without_default_keys", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
     while (!syncer.checkAllRestoreFinish(dbName)) {
@@ -81,4 +81,4 @@ suite("test_backup_restore_dup_without_default_keys", "backup_restore") {
     sql "DROP TABLE ${dbName}.${tableName} FORCE"
     sql "DROP DATABASE ${dbName} FORCE"
     sql "DROP REPOSITORY `${repoName}`"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/backup_restore/test_backup_restore_exclude.groovy b/regression-test/suites/backup_restore/test_backup_restore_exclude.groovy
index 012d77cc75..c499ee244c 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_exclude.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_exclude.groovy
@@ -82,7 +82,7 @@ suite("test_backup_restore_exclude", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_multi_tables.groovy b/regression-test/suites/backup_restore/test_backup_restore_multi_tables.groovy
index a795ae0ded..54f08cba8e 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_multi_tables.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_multi_tables.groovy
@@ -79,7 +79,7 @@ suite("test_backup_restore_multi_tables", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_multi_tables_overwrite.groovy b/regression-test/suites/backup_restore/test_backup_restore_multi_tables_overwrite.groovy
index 67cf37bc6e..5eb3bc982e 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_multi_tables_overwrite.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_multi_tables_overwrite.groovy
@@ -80,7 +80,7 @@ suite("test_backup_restore_multi_tables_overwrite", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_partition.groovy b/regression-test/suites/backup_restore/test_backup_restore_partition.groovy
index 7cc448e2ba..60194e34b7 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_partition.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_partition.groovy
@@ -83,7 +83,7 @@ suite("test_backup_restore_partition", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
@@ -102,7 +102,7 @@ suite("test_backup_restore_partition", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_false.groovy b/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_false.groovy
index e1bf2439c6..c51f593766 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_false.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_false.groovy
@@ -94,7 +94,7 @@ suite("test_backup_restore_reserve_dynamic_partition_false", "backup_restore") {
         (
             "backup_timestamp" = "${snapshot}",
             "reserve_dynamic_partition_enable" = "false",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
     while (!syncer.checkAllRestoreFinish(dbName)) {
@@ -111,4 +111,4 @@ suite("test_backup_restore_reserve_dynamic_partition_false", "backup_restore") {
     sql "DROP TABLE ${dbName}.${tableName} FORCE"
     sql "DROP DATABASE ${dbName} FORCE"
     sql "DROP REPOSITORY `${repoName}`"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_true.groovy b/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_true.groovy
index 95f81d8e01..64362407d3 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_true.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_reserve_dynamic_partition_true.groovy
@@ -94,7 +94,7 @@ suite("test_backup_restore_dynamic_partition_reserve_true", "backup_restore") {
         (
             "backup_timestamp" = "${snapshot}",
             "reserve_dynamic_partition_enable" = "true",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
     
@@ -116,4 +116,4 @@ suite("test_backup_restore_dynamic_partition_reserve_true", "backup_restore") {
     sql "DROP TABLE ${dbName}.${tableName} FORCE"
     sql "DROP DATABASE ${dbName} FORCE"
     sql "DROP REPOSITORY `${repoName}`"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/backup_restore/test_backup_restore_table_auto_bucket.groovy b/regression-test/suites/backup_restore/test_backup_restore_table_auto_bucket.groovy
index 2b1efb16d5..f0c6b1e812 100644
--- a/regression-test/suites/backup_restore/test_backup_restore_table_auto_bucket.groovy
+++ b/regression-test/suites/backup_restore/test_backup_restore_table_auto_bucket.groovy
@@ -67,7 +67,7 @@ suite("test_backup_restore_table_auto_bucket", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
     while (!syncer.checkAllRestoreFinish(dbName)) {
@@ -84,4 +84,4 @@ suite("test_backup_restore_table_auto_bucket", "backup_restore") {
     sql "DROP TABLE ${dbName}.${tableName} FORCE"
     sql "DROP DATABASE ${dbName} FORCE"
     sql "DROP REPOSITORY `${repoName}`"
-}
\ No newline at end of file
+}
diff --git a/regression-test/suites/backup_restore/test_duplicate_backup_restore.groovy b/regression-test/suites/backup_restore/test_duplicate_backup_restore.groovy
index a3117feb30..d82ad431f8 100644
--- a/regression-test/suites/backup_restore/test_duplicate_backup_restore.groovy
+++ b/regression-test/suites/backup_restore/test_duplicate_backup_restore.groovy
@@ -69,7 +69,7 @@ suite("test_duplicate_backup_restore", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
         """
     
@@ -109,7 +109,7 @@ suite("test_duplicate_backup_restore", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
         """
     while (!syncer.checkAllRestoreFinish(dbName)) {
diff --git a/regression-test/suites/backup_restore/test_restore_mix_exists_and_new_table.groovy b/regression-test/suites/backup_restore/test_restore_mix_exists_and_new_table.groovy
index 7bb6c91c19..f21baae0e5 100644
--- a/regression-test/suites/backup_restore/test_restore_mix_exists_and_new_table.groovy
+++ b/regression-test/suites/backup_restore/test_restore_mix_exists_and_new_table.groovy
@@ -79,7 +79,7 @@ suite("test_restore_mix_exists_and_new_table", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_restore_to_new_table.groovy b/regression-test/suites/backup_restore/test_restore_to_new_table.groovy
index 76f82eb8c9..7d99e9fa33 100644
--- a/regression-test/suites/backup_restore/test_restore_to_new_table.groovy
+++ b/regression-test/suites/backup_restore/test_restore_to_new_table.groovy
@@ -68,7 +68,7 @@ suite("test_restore_to_new_table", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
     """
 
diff --git a/regression-test/suites/backup_restore/test_unique_backup_restore.groovy b/regression-test/suites/backup_restore/test_unique_backup_restore.groovy
index b1092871fd..eea0620a99 100644
--- a/regression-test/suites/backup_restore/test_unique_backup_restore.groovy
+++ b/regression-test/suites/backup_restore/test_unique_backup_restore.groovy
@@ -69,7 +69,7 @@ suite("test_unique_backup_restore", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
         """
 
@@ -109,7 +109,7 @@ suite("test_unique_backup_restore", "backup_restore") {
         PROPERTIES
         (
             "backup_timestamp" = "${snapshot}",
-            "replication_num" = "1"
+            "reserve_replica" = "true"
         )
         """
     while (!syncer.checkAllRestoreFinish(dbName)) {
@@ -120,4 +120,4 @@ suite("test_unique_backup_restore", "backup_restore") {
     sql "DROP TABLE ${dbName}.${tableName} FORCE"
     sql "DROP DATABASE ${dbName} FORCE"
     sql "DROP REPOSITORY `${repoName}`"
-}
\ No newline at end of file
+}