add comment

seawinde · Aug 30, 2024 · 8bf2b60 · 8bf2b60
1 parent a58fa5f
commit 8bf2b60
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/...main/java/org/apache/doris/nereids/rules/exploration/mv/AbstractMaterializedViewRule.java b/...main/java/org/apache/doris/nereids/rules/exploration/mv/AbstractMaterializedViewRule.java
@@ -358,6 +358,7 @@ protected List<Plan> doRewrite(StructInfo queryStructInfo, CascadesContext casca
             materializationContext.tryReGenerateScanPlan(cascadesContext);
             //  if rewrite successfully, try to get mv read lock to avoid data inconsistent
             if (materializationContext instanceof AsyncMaterializationContext && !materializationContext.isSuccess()) {
+                // Need get mtmv read lock, to avoid the data of plan which use mv is wrong
                 cascadesContext.getStatementContext()
                         .addTableReadLock(((AsyncMaterializationContext) materializationContext).getMtmv());
             }