starocean999 commented on code in PR #45108:
URL: https://github.com/apache/doris/pull/45108#discussion_r1879446762


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/parser/LogicalPlanBuilder.java:
##########
@@ -4714,6 +4717,26 @@ public LogicalPlan 
visitShowStorageEngines(ShowStorageEnginesContext ctx) {
         return new ShowStorageEnginesCommand();
     }
 
+    @Override
+    public LogicalPlan visitAdminRebalanceDisk(AdminRebalanceDiskContext ctx) {
+        if (ctx.ON() != null) {
+            List<String> backendList = Lists.newArrayList();
+            ctx.backends.forEach(backend -> 
backendList.add(stripQuotes(backend.getText())));
+            return new AdminRebalanceDiskCommand(false, backendList);
+        }
+        return new AdminRebalanceDiskCommand(false);
+    }
+
+    @Override
+    public LogicalPlan 
visitAdminCancelRebalanceDisk(AdminCancelRebalanceDiskContext ctx) {
+        if (ctx.ON() != null) {
+            List<String> backendList = Lists.newArrayList();
+            ctx.backends.forEach(backend -> 
backendList.add(stripQuotes(backend.getText())));
+            return new AdminRebalanceDiskCommand(true, backendList);

Review Comment:
   As Binfeng said, you can create a base class like RebalanceDiskCommand and 
put common logic there, the use two different sub classes to implement the two 
commands



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