From ad01c3395bd87719e7092baa586f0646dbf60188 Mon Sep 17 00:00:00 2001
From: zhangdong <493738387@qq.com>
Date: Wed, 23 Aug 2023 21:47:52 +0800
Subject: [PATCH 1/5] add custom jar

---
 bin/start_be.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index 6eead1c1e467b8..555b488c5fbff6 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -90,6 +90,15 @@ for preload_jar in "${preload_jars[@]}"; do
     fi
 done
 
+# add custom jar
+custom_extension_folder="${DORIS_HOME}/lib/java_extensions/custom_extension"
+
+if [ -d "$custom_extension_folder" ]; then
+  for file in "$custom_extension_folder"/*.jar ; do
+    export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
+  done
+fi
+
 if [[ -d "${DORIS_HOME}/lib/hadoop_hdfs/" ]]; then
     # add hadoop libs
     for f in "${DORIS_HOME}/lib/hadoop_hdfs/common"/*.jar; do

From 1b33c2543b67ad75c25882675fe3a188356bdfb4 Mon Sep 17 00:00:00 2001
From: zhangdong <493738387@qq.com>
Date: Wed, 23 Aug 2023 21:59:48 +0800
Subject: [PATCH 2/5] format

---
 bin/start_be.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index 555b488c5fbff6..f378cc22ed719c 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -93,8 +93,8 @@ done
 # add custom jar
 custom_extension_folder="${DORIS_HOME}/lib/java_extensions/custom_extension"
 
-if [ -d "$custom_extension_folder" ]; then
-  for file in "$custom_extension_folder"/*.jar ; do
+if [[ -d "${custom_extension_folder}" ]]; then
+  for file in "${custom_extension_folder}"/*.jar ; do
     export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
   done
 fi

From 2b7fd22841a7d0fdbdd3caf8e0e82299bd97d5cb Mon Sep 17 00:00:00 2001
From: zhangdong <493738387@qq.com>
Date: Wed, 23 Aug 2023 22:04:53 +0800
Subject: [PATCH 3/5] format

---
 bin/start_be.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index f378cc22ed719c..26a627d93ace37 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -94,9 +94,9 @@ done
 custom_extension_folder="${DORIS_HOME}/lib/java_extensions/custom_extension"
 
 if [[ -d "${custom_extension_folder}" ]]; then
-  for file in "${custom_extension_folder}"/*.jar ; do
-    export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
-  done
+    for file in "${custom_extension_folder}"/*.jar ; do
+        export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
+    done
 fi
 
 if [[ -d "${DORIS_HOME}/lib/hadoop_hdfs/" ]]; then

From 6469693df03d06918ccbc272e5e091e241c8ee63 Mon Sep 17 00:00:00 2001
From: zhangdong <493738387@qq.com>
Date: Wed, 23 Aug 2023 22:08:27 +0800
Subject: [PATCH 4/5] format

---
 bin/start_be.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index 26a627d93ace37..eafd628fff0b6b 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -94,7 +94,7 @@ done
 custom_extension_folder="${DORIS_HOME}/lib/java_extensions/custom_extension"
 
 if [[ -d "${custom_extension_folder}" ]]; then
-    for file in "${custom_extension_folder}"/*.jar ; do
+    for file in "${custom_extension_folder}"/*.jar; do
         export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
     done
 fi

From b699ce9824f0d7426986d2a77cfb6508dbb603bb Mon Sep 17 00:00:00 2001
From: zhangdong <493738387@qq.com>
Date: Thu, 24 Aug 2023 09:14:24 +0800
Subject: [PATCH 5/5] add doc

---
 bin/start_be.sh                               | 24 +++++++------------
 .../admin-manual/cluster-management/fqdn.md   |  6 ++++-
 .../en/docs/lakehouse/multi-catalog/paimon.md | 11 +++++++++
 .../admin-manual/cluster-management/fqdn.md   |  6 ++++-
 .../docs/lakehouse/multi-catalog/paimon.md    | 10 ++++++++
 5 files changed, 39 insertions(+), 18 deletions(-)

diff --git a/bin/start_be.sh b/bin/start_be.sh
index eafd628fff0b6b..09613b3b20b83b 100755
--- a/bin/start_be.sh
+++ b/bin/start_be.sh
@@ -81,23 +81,15 @@ fi
 preload_jars=("preload-extensions")
 preload_jars+=("java-udf")
 
-for preload_jar in "${preload_jars[@]}"; do
-    f="${DORIS_HOME}/lib/java_extensions/${preload_jar}/${preload_jar}-jar-with-dependencies.jar"
-    if [[ -z "${DORIS_CLASSPATH}" ]]; then
-        export DORIS_CLASSPATH="${f}"
-    else
-        export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${f}"
-    fi
-done
-
-# add custom jar
-custom_extension_folder="${DORIS_HOME}/lib/java_extensions/custom_extension"
-
-if [[ -d "${custom_extension_folder}" ]]; then
-    for file in "${custom_extension_folder}"/*.jar; do
-        export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${file}"
+for preload_jar_dir in "${preload_jars[@]}"; do
+    for f in "${DORIS_HOME}/lib/java_extensions/${preload_jar_dir}"/*.jar; do
+        if [[ -z "${DORIS_CLASSPATH}" ]]; then
+            export DORIS_CLASSPATH="${f}"
+        else
+            export DORIS_CLASSPATH="${DORIS_CLASSPATH}:${f}"
+        fi
     done
-fi
+done
 
 if [[ -d "${DORIS_HOME}/lib/hadoop_hdfs/" ]]; then
     # add hadoop libs
diff --git a/docs/en/docs/admin-manual/cluster-management/fqdn.md b/docs/en/docs/admin-manual/cluster-management/fqdn.md
index 67ea47d9cf930e..0693392c006090 100644
--- a/docs/en/docs/admin-manual/cluster-management/fqdn.md
+++ b/docs/en/docs/admin-manual/cluster-management/fqdn.md
@@ -76,13 +76,17 @@ After deploying the cluster according to 'Enable FQDN for new cluster', if you w
 Precondition: The current program supports the syntax 'Alter SYSTEM MODIFY FRONTEND'<fe_ip>:<edit_log_port>'HOSTNAME'<fe_hostname>',
 If not, upgrade to a version that supports the syntax
 
+>Note that.
+>
+> At least three followers are required to perform the following operations, otherwise the cluster may not start properly
+
 Next, follow the steps below:
 
 1. Perform the following operations on the Follower and Observer nodes one by one (and finally on the Master node):
 
    1. Stop the node.
    2. Check if the node has stopped. Execute 'show frontends' through the MySQL client to view the Alive status of the FE node until it becomes false
-   3. set FQDN for node: `ALTER SYSTEM MODIFY FRONTEND "<fe_ip>:<edit_log_port>" HOSTNAME "<fe_hostname>"`
+   3. set FQDN for node: `ALTER SYSTEM MODIFY FRONTEND "<fe_ip>:<edit_log_port>" HOSTNAME "<fe_hostname>"`(After stopping the master, a new master node will be selected and used to execute SQL statements)
    4. Modify node configuration. Modify the 'conf/fe. conf' file in the FE root directory and add the configuration: `enable_fqdn_mode = true`
    5. Start the node.
 
diff --git a/docs/en/docs/lakehouse/multi-catalog/paimon.md b/docs/en/docs/lakehouse/multi-catalog/paimon.md
index 79e5b76681d125..68bf4cb0112f23 100644
--- a/docs/en/docs/lakehouse/multi-catalog/paimon.md
+++ b/docs/en/docs/lakehouse/multi-catalog/paimon.md
@@ -60,6 +60,11 @@ CREATE CATALOG `paimon_hdfs` PROPERTIES (
 
 #### S3
 
+>Note that.
+>
+> user need download [paimon-s3-0.4.0-incubating.jar](https://repo.maven.apache.org/maven2/org/apache/paimon/paimon-s3/0.4.0-incubating/paimon-s3-0.4.0-incubating.jar)
+> Place it in directory ${DORIS_HOME}/be/lib/java_extensions/preload-extensions and restart be
+
 ```sql
 CREATE CATALOG `paimon_s3` PROPERTIES (
     "type" = "paimon",
@@ -73,6 +78,12 @@ CREATE CATALOG `paimon_s3` PROPERTIES (
 
 #### OSS
 
+>Note that.
+>
+> user need download [paimon-oss-0.4.0-incubating.jar](https://repo.maven.apache.org/maven2/org/apache/paimon/paimon-oss/0.4.0-incubating/paimon-oss-0.4.0-incubating.jar)
+> Place it in directory ${DORIS_HOME}/be/lib/java_extensions/preload-extensions and restart be
+
+
 ```sql
 CREATE CATALOG `paimon_oss` PROPERTIES (
     "type" = "paimon",
diff --git a/docs/zh-CN/docs/admin-manual/cluster-management/fqdn.md b/docs/zh-CN/docs/admin-manual/cluster-management/fqdn.md
index 11cb859d65c8bc..e7ec1454511634 100644
--- a/docs/zh-CN/docs/admin-manual/cluster-management/fqdn.md
+++ b/docs/zh-CN/docs/admin-manual/cluster-management/fqdn.md
@@ -76,13 +76,17 @@ K8s 部署 Doris 的方法请参考[K8s 部署doris](../../install/k8s-deploy.md
 前提条件：当前程序支持`ALTER SYSTEM MODIFY FRONTEND "<fe_ip>:<edit_log_port>" HOSTNAME "<fe_hostname>"`语法，
 如果不支持，需要升级到支持该语法的版本
 
+>注意：
+>
+> 至少有三台follower才能进行如下操作，否则会造成集群无法正常启动
+
 接下来按照如下步骤操作：
 
 1. 逐一对 Follower、Observer 节点进行以下操作(最后操作 Master 节点)：
 
     1. 停止节点。
     2. 检查节点是否停止。通过 MySQL 客户端执行`show frontends`，查看该 FE 节点的 Alive 状态直至变为 false
-    3. 为节点设置 FQDN: `ALTER SYSTEM MODIFY FRONTEND "<fe_ip>:<edit_log_port>" HOSTNAME "<fe_hostname>"`
+    3. 为节点设置 FQDN: `ALTER SYSTEM MODIFY FRONTEND "<fe_ip>:<edit_log_port>" HOSTNAME "<fe_hostname>"`（停掉master后，会选举出新的master节点，用新的master节点来执行sql语句）
     4. 修改节点配置。修改 FE 根目录中的`conf/fe.conf`文件，添加配置：`enable_fqdn_mode = true`
     5. 启动节点。
     
diff --git a/docs/zh-CN/docs/lakehouse/multi-catalog/paimon.md b/docs/zh-CN/docs/lakehouse/multi-catalog/paimon.md
index 7a14c879ae37ad..73cab27a034dc2 100644
--- a/docs/zh-CN/docs/lakehouse/multi-catalog/paimon.md
+++ b/docs/zh-CN/docs/lakehouse/multi-catalog/paimon.md
@@ -60,6 +60,11 @@ CREATE CATALOG `paimon_hdfs` PROPERTIES (
 
 #### S3
 
+>注意：
+>
+> 用户需要手动下载[paimon-s3-0.4.0-incubating.jar](https://repo.maven.apache.org/maven2/org/apache/paimon/paimon-s3/0.4.0-incubating/paimon-s3-0.4.0-incubating.jar)
+> 放在${DORIS_HOME}/be/lib/java_extensions/preload-extensions目录下并重启be
+
 ```sql
 CREATE CATALOG `paimon_s3` PROPERTIES (
     "type" = "paimon",
@@ -73,6 +78,11 @@ CREATE CATALOG `paimon_s3` PROPERTIES (
 
 #### OSS
 
+>注意：
+>
+> 用户需要手动下载[paimon-oss-0.4.0-incubating.jar](https://repo.maven.apache.org/maven2/org/apache/paimon/paimon-oss/0.4.0-incubating/paimon-oss-0.4.0-incubating.jar)
+> 放在${DORIS_HOME}/be/lib/java_extensions/preload-extensions目录下并重启be
+
 ```sql
 CREATE CATALOG `paimon_oss` PROPERTIES (
     "type" = "paimon",