[fix](test)Format ipv6

fe/fe-core/pom.xml

@@ -236,6 +236,13 @@ under the License.
             <groupId>dk.brics.automaton</groupId>
             <artifactId>automaton</artifactId>
         </dependency>
+        <!-- https://mvnrepository.com/artifact/com.github.seancfoley/ipaddress -->
+        <dependency>
+            <groupId>com.github.seancfoley</groupId>
+            <artifactId>ipaddress</artifactId>
+            <version>5.5.1</version>
+        </dependency>
+
         <!-- https://mvnrepository.com/artifact/com.github.mifmif/generex -->
         <dependency>
             <groupId>com.github.mifmif</groupId>

fe/fe-core/src/main/java/org/apache/doris/common/proc/FrontendsProcNode.java

@@ -33,6 +33,7 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import inet.ipaddr.IPAddressString;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.util.ArrayList;
@@ -214,10 +215,18 @@ private static boolean isJoin(List<InetSocketAddress> allFeHosts, Frontend fe) {
                 LOG.warn("Failed to get InetAddress {}", addr);
                 continue;
             }
-            if (fe.getHost().equals(address.getHostAddress())) {
+            // Format the IP address
+            String formattedIp = formatIp(address.getHostAddress());
+
+            if (formatIp(fe.getHost()).equals(formattedIp)) {
                 return true;
             }
         }
         return false;
     }
+
+    private static String formatIp(String str) {
+        // Use IPAddressString to format the IP address
+        return new IPAddressString(str).getAddress().toCanonicalString();
+    }
 }

fe/fe-core/src/test/java/org/apache/doris/common/proc/FrontendsProcNodeTest.java

@@ -0,0 +1,66 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package org.apache.doris.common.proc;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.lang.reflect.Method;
+
+public class FrontendsProcNodeTest {
+
+    @Test
+    public void testFormatIp() throws Exception {
+        // Test input and expected output for IPv6
+        String inputIPv6 = "fe80:0:0:0:20c:29ff:fef9:3a18";
+        String expectedIPv6 = "fe80::20c:29ff:fef9:3a18";
+
+        // Test input and expected output for IPv4
+        String inputIPv4 = "192.168.1.1";
+        String expectedIPv4 = "192.168.1.1";  // No change for IPv4
+
+        // Use reflection to get the formatIp method
+        Method formatIpMethod = FrontendsProcNode.class.getDeclaredMethod("formatIp", String.class);
+        formatIpMethod.setAccessible(true); // Make the method accessible
+
+        // Test IPv6
+        String actualIPv6 = (String) formatIpMethod.invoke(null, inputIPv6);
+        Assert.assertEquals(expectedIPv6, actualIPv6);
+
+        // Test IPv4
+        String actualIPv4 = (String) formatIpMethod.invoke(null, inputIPv4);
+        Assert.assertEquals(expectedIPv4, actualIPv4);
+    }
+}