[enhancement](config) enlarge max_bytes_per_broker_scanner to 5G #22099

docs/en/docs/admin-manual/config/fe-config.md

@@ -1141,7 +1141,7 @@ fetch stream load record interval.
 
 #### `max_bytes_per_broker_scanner`
 
-Default：`3 * 1024 * 1024 * 1024L`  （3G）
+Default：`5 * 1024 * 1024 * 1024L`  （5G）
 
 IsMutable：true
 

docs/en/docs/data-operate/import/import-way/broker-load-manual.md

@@ -320,7 +320,7 @@ The following configurations belong to the system-level configuration of Broker
   ````text
   Parameter name: min_bytes_per_broker_scanner, the default is 64MB, the unit is bytes.
   Parameter name: max_broker_concurrency, default 10.
-  Parameter name: max_bytes_per_broker_scanner, the default is 3G, the unit is bytes.
+  Parameter name: max_bytes_per_broker_scanner, the default is 5G, the unit is bytes.
   ````
 
 ## Best Practices

docs/zh-CN/docs/admin-manual/config/fe-config.md

@@ -1141,7 +1141,7 @@ current running txns on db xxx is xx, larger than limit xx
 
 #### `max_bytes_per_broker_scanner`
 
-默认值：3 * 1024 * 1024 * 1024L  （3G）
+默认值：5 * 1024 * 1024 * 1024L  （5G）
 
 是否可以动态配置：true
 

docs/zh-CN/docs/data-operate/import/import-way/broker-load-manual.md

@@ -320,7 +320,7 @@ Broker Load 需要借助 Broker 进程访问远端存储，不同的 Broker 需
   ```text
   参数名：min_bytes_per_broker_scanner， 默认 64MB，单位bytes。
   参数名：max_broker_concurrency， 默认 10。
-  参数名：max_bytes_per_broker_scanner，默认 3G，单位bytes。
+  参数名：max_bytes_per_broker_scanner，默认 5G，单位bytes。
   ```
 
 ## 最佳实践

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -803,7 +803,7 @@ public class Config extends ConfigBase {
      * Commonly, each Backends has one broker scanner.
      */
     @ConfField(mutable = true, masterOnly = true)
-    public static long max_bytes_per_broker_scanner = 3 * 1024 * 1024 * 1024L; // 3G
+    public static long max_bytes_per_broker_scanner = 5 * 1024 * 1024 * 1024L; // 5G
 
     /**
      * Max number of load jobs, include PENDING、ETL、LOADING、QUORUM_FINISHED.