[Enhancement] (nereids)implement syncCommand in nereids

fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4

@@ -59,6 +59,7 @@ statementBase
     | supportedRefreshStatement         #supportedRefreshStatementAlias
     | supportedShowStatement            #supportedShowStatementAlias
     | supportedRecoverStatement         #supportedRecoverStatementAlias
+    | supportedLoadStatement            #supportedLoadfStatementAlias
     | unsupportedStatement              #unsupported
     ;
 
@@ -231,6 +232,10 @@ supportedShowStatement
         tabletIds+=INTEGER_VALUE (COMMA tabletIds+=INTEGER_VALUE)*                  #showTabletsBelong    
     ;
 
+supportedLoadStatement
+    : SYNC                                                                          #sync
+    ;
+
 unsupportedOtherStatement
     : HELP mark=identifierOrText                                                    #help
     | INSTALL PLUGIN FROM source=identifierOrText properties=propertyClause?        #installPlugin
@@ -371,7 +376,6 @@ unsupportedLoadStatement
     | SHOW ROUTINE LOAD TASK ((FROM | IN) database=identifier)? wildWhere?          #showRoutineLoadTask
     | SHOW ALL? CREATE ROUTINE LOAD FOR label=multipartIdentifier                   #showCreateRoutineLoad
     | SHOW CREATE LOAD FOR label=multipartIdentifier                                #showCreateLoad
-    | SYNC                                                                          #sync
     | importSequenceStatement                                                       #importSequenceStatementAlias
     | importPrecedingFilterStatement                                                #importPrecedingFilterStatementAlias
     | importWhereStatement                                                          #importWhereStatementAlias

fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java

@@ -241,6 +241,7 @@
 import org.apache.doris.nereids.DorisParser.SubqueryContext;
 import org.apache.doris.nereids.DorisParser.SubqueryExpressionContext;
 import org.apache.doris.nereids.DorisParser.SupportedUnsetStatementContext;
+import org.apache.doris.nereids.DorisParser.SyncContext;
 import org.apache.doris.nereids.DorisParser.SystemVariableContext;
 import org.apache.doris.nereids.DorisParser.TableAliasContext;
 import org.apache.doris.nereids.DorisParser.TableNameContext;
@@ -491,6 +492,7 @@
 import org.apache.doris.nereids.trees.plans.commands.ShowVariablesCommand;
 import org.apache.doris.nereids.trees.plans.commands.ShowViewCommand;
 import org.apache.doris.nereids.trees.plans.commands.ShowWhiteListCommand;
+import org.apache.doris.nereids.trees.plans.commands.SyncCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsetDefaultStorageVaultCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsetVariableCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsupportedCommand;
@@ -4342,6 +4344,11 @@ public LogicalPlan visitShowTableId(ShowTableIdContext ctx) {
         return new ShowTableIdCommand(tableId);
     }
 
+    @Override
+    public LogicalPlan visitSync(SyncContext ctx) {
+        return new SyncCommand();
+    }
+
     @Override
     public LogicalPlan visitShowPrivileges(ShowPrivilegesContext ctx) {
         return new ShowPrivilegesCommand();

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/PlanType.java

@@ -207,6 +207,7 @@ public enum PlanType {
     SHOW_VIEW_COMMAND,
     SHOW_WHITE_LIST_COMMAND,
     SHOW_TABLETS_BELONG_COMMAND,
+    SYNC_COMMAND,
     RECOVER_DATABASE_COMMAND,
     RECOVER_TABLE_COMMAND,
     RECOVER_PARTITION_COMMAND,

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/commands/SyncCommand.java

@@ -0,0 +1,58 @@
+// 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.nereids.trees.plans.commands;
+
+import org.apache.doris.analysis.RedirectStatus;
+import org.apache.doris.analysis.StmtType;
+import org.apache.doris.nereids.trees.plans.PlanType;
+import org.apache.doris.nereids.trees.plans.visitor.PlanVisitor;
+import org.apache.doris.qe.ConnectContext;
+import org.apache.doris.qe.StmtExecutor;
+
+/**
+ * sync command
+ */
+public class SyncCommand extends Command implements Redirect {
+
+    /**
+     * constructor
+     */
+    public SyncCommand() {
+        super(PlanType.SYNC_COMMAND);
+    }
+
+    @Override
+    public void run(ConnectContext ctx, StmtExecutor executor) throws Exception {
+        // nothing to do
+    }
+
+    @Override
+    public <R, C> R accept(PlanVisitor<R, C> visitor, C context) {
+        return visitor.visitSyncCommand(this, context);
+    }
+
+    @Override
+    public RedirectStatus toRedirectStatus() {
+        return RedirectStatus.FORWARD_WITH_SYNC;
+    }
+
+    @Override
+    public StmtType stmtType() {
+        return StmtType.SYNC;
+    }
+}

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/visitor/CommandVisitor.java

@@ -87,6 +87,7 @@
 import org.apache.doris.nereids.trees.plans.commands.ShowVariablesCommand;
 import org.apache.doris.nereids.trees.plans.commands.ShowViewCommand;
 import org.apache.doris.nereids.trees.plans.commands.ShowWhiteListCommand;
+import org.apache.doris.nereids.trees.plans.commands.SyncCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsetDefaultStorageVaultCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsetVariableCommand;
 import org.apache.doris.nereids.trees.plans.commands.UnsupportedCommand;
@@ -406,6 +407,10 @@ default R visitShowTrashCommand(ShowTrashCommand showTrashCommand, C context) {
         return visitCommand(showTrashCommand, context);
     }
 
+    default R visitSyncCommand(SyncCommand syncCommand, C context) {
+        return visitCommand(syncCommand, context);
+    }
+
     default R visitShowPrivilegesCommand(ShowPrivilegesCommand showPrivilegesCommand, C context) {
         return visitCommand(showPrivilegesCommand, context);
     }

regression-test/suites/nereids_p0/test_nereids_other_commands.groovy

@@ -0,0 +1,20 @@
+// 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.
+
+suite("test_nereids_other_commands") {
+    checkNereidsExecute("sync;")
+}