From a4e041ea55619ee5e0ae4ce418e55c847f47eeb1 Mon Sep 17 00:00:00 2001
From: Lightman <31928846+Lchangliang@users.noreply.github.com>
Date: Tue, 22 Aug 2023 16:28:36 +0800
Subject: [PATCH] [improve](alter-job) Add a config for forbiding doing alter
 job (#23294)

---
 fe/fe-common/src/main/java/org/apache/doris/common/Config.java | 3 +++
 .../main/java/org/apache/doris/alter/SchemaChangeHandler.java  | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
index aa415da212..6131740e92 100644
--- a/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
+++ b/fe/fe-common/src/main/java/org/apache/doris/common/Config.java
@@ -2111,4 +2111,7 @@ public class Config extends ConfigBase {
             "是否用 mysql 的 bigint 类型来返回 Doris 的 largeint 类型",
             "Whether to use mysql's bigint type to return Doris's largeint type"})
     public static boolean use_mysql_bigint_for_largeint = false;
+
+    @ConfField
+    public static boolean forbid_running_alter_job = false;
 }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeHandler.java b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeHandler.java
index b555516bc2..14946d18c0 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeHandler.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeHandler.java
@@ -1602,6 +1602,9 @@ public class SchemaChangeHandler extends AlterHandler {
     }
 
     private void runAlterJobV2() {
+        if (Config.forbid_running_alter_job) {
+            return;
+        }
         runnableSchemaChangeJobV2.values().forEach(alterJobsV2 -> {
             if (!alterJobsV2.isDone() && !activeSchemaChangeJobsV2.containsKey(alterJobsV2.getJobId())
                     && activeSchemaChangeJobsV2.size() < MAX_ACTIVE_SCHEMA_CHANGE_JOB_V2_SIZE) {