sandynz commented on code in PR #30339:
URL: https://github.com/apache/shardingsphere/pull/30339#discussion_r1505685799


##########
kernel/data-pipeline/distsql/handler/src/main/java/org/apache/shardingsphere/data/pipeline/migration/distsql/handler/update/MigrateTableExecutor.java:
##########
@@ -43,7 +43,7 @@ public final class MigrateTableExecutor implements 
DistSQLUpdateExecutor<Migrate
     @Override
     public void executeUpdate(final MigrateTableStatement sqlStatement, final 
ContextManager contextManager) {
         String modeType = 
contextManager.getInstanceContext().getModeConfiguration().getType();
-        ShardingSpherePreconditions.checkState(!"Standalone".equals(modeType), 
() -> new PipelineInvalidParameterException("Unsupported mode type of 
`Standalone`"));
+        ShardingSpherePreconditions.checkState("Cluster".equals(modeType), () 
-> new PipelineInvalidParameterException("Only `Cluster` of mode type is 
supported for now"));

Review Comment:
   1, Could we invoke `InstanceContext.isCluster()`? Looks there's another one 
`Compatible_Cluster` except `Cluster`
   
   2, Could we put current mode type in error message?
   



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