morningman commented on code in PR #49875:
URL: https://github.com/apache/doris/pull/49875#discussion_r2056875469


##########
fe/fe-core/src/main/java/org/apache/doris/catalog/MTMV.java:
##########
@@ -473,6 +473,12 @@ public void setRefreshSnapshot(MTMVRefreshSnapshot 
refreshSnapshot) {
         this.refreshSnapshot = refreshSnapshot;
     }
 
+    public boolean canBeCandidate() {
+        // MTMVRefreshState.FAIL also can be candidate, because may have some 
sync partitions
+        return getStatus().getState() == MTMVState.NORMAL
+                && getStatus().getRefreshState() != MTMVRefreshState.INIT;

Review Comment:
   How about create a `canBeCandidate()` in `MTMVStatus`?
   So that we won't miss this judgement if we add or delete the status or state 
enum.
   For example, if i add a new `MTMVRefreshState`, this logic may be forgot to 
modify



##########
fe/fe-core/src/main/java/org/apache/doris/mtmv/BaseTableInfo.java:
##########
@@ -159,10 +159,14 @@ public String toString() {
                 + '}';
     }
 
-    public void compatible(CatalogMgr catalogMgr) {
+    public void compatible(CatalogMgr catalogMgr) throws Exception {
         if (!StringUtils.isEmpty(ctlName)) {
             return;
         }
+        // should not get meta from external catalog when replay, because the 
timeout period may be very long
+        if (ctlId != InternalCatalog.INTERNAL_CATALOG_ID) {
+            throw new Exception("can not compatibility external table");

Review Comment:
   Better add catalog, db and table info in error msg



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