[fix](nereids)prevent null pointer access if translate expression fails

apache · Apr 22, 2024 · 6ea24d0 · 6ea24d0
1 parent 8e5369c
commit 6ea24d0
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/...e/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnBE.java b/...e/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnBE.java
@@ -215,6 +215,10 @@ private static void collectConst(Expression expr, Map<String, Expression> constM
                 LOG.warn("expression {} translate to legacy expr failed. ", expr, e);
                 return;
             }
+            if (staleExpr == null) {
+                // just return, it's a fail-safe
+                return;
+            }
             tExprMap.put(id, staleExpr.treeToThrift());
         } else {
             for (int i = 0; i < expr.children().size(); i++) {