[fix](checkpoint)fix Checkpoint error when http server is not ready #19699

fe/fe-core/src/main/java/org/apache/doris/DorisFE.java

@@ -172,6 +172,7 @@ public class DorisFE {
                 httpServer.setMinThreads(Config.jetty_threadPool_minThreads);
                 httpServer.setMaxHttpHeaderSize(Config.jetty_server_max_http_header_size);
                 httpServer.start();
+                Env.getCurrentEnv().setHttpReady(true);
             }
 
             if (options.enableQeService) {

fe/fe-core/src/main/java/org/apache/doris/catalog/Env.java

@@ -333,6 +333,8 @@ public class Env {
     // set to true after finished replay all meta and ready to serve
     // set to false when catalog is not ready.
     private AtomicBoolean isReady = new AtomicBoolean(false);
+    // set to true after http server start
+    private AtomicBoolean httpReady = new AtomicBoolean(false);
     // set to true if FE can offer READ service.
     // canRead can be true even if isReady is false.
     // for example: OBSERVER transfer to UNKNOWN, then isReady will be set to false, but canRead can still be true
@@ -920,6 +922,14 @@ public class Env {
         return isReady.get();
     }
 
+    public boolean isHttpReady() {
+        return httpReady.get();
+    }
+
+    public void setHttpReady(boolean httpReady) {
+        this.httpReady.set(httpReady);
+    }
+
     private void getClusterIdAndRole() throws IOException {
         File roleFile = new File(this.imageDir, Storage.ROLE_FILE);
         File versionFile = new File(this.imageDir, Storage.VERSION_FILE);

fe/fe-core/src/main/java/org/apache/doris/master/Checkpoint.java

@@ -83,6 +83,10 @@ public class Checkpoint extends MasterDaemon {
     // public for unit test, so that we can trigger checkpoint manually.
     // DO NOT call it manually outside the unit test.
     public synchronized void doCheckpoint() throws CheckpointException {
+        if (!Env.getServingEnv().isHttpReady()) {
+            LOG.info("Http server is not ready.");
+            return;
+        }
         long imageVersion = 0;
         long checkPointVersion = 0;
         Storage storage = null;