sohardforaname commented on code in PR #18257:
URL: https://github.com/apache/doris/pull/18257#discussion_r1247382946


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FunctionBinder.java:
##########
@@ -86,7 +88,7 @@ public Expression visitUnboundFunction(UnboundFunction 
unboundFunction, Expressi
                 .map(e -> e.accept(this, 
context)).collect(Collectors.toList()));
 
         // bind function
-        FunctionRegistry functionRegistry = 
context.cascadesContext.getConnectContext().getFunctionRegistry();
+        FunctionRegistry functionRegistry = 
Env.getCurrentEnv().getFunctionRegistry();

Review Comment:
   because the connect context also get registry from env. In replaying 
function phase, connect context is null, this way is to avoid it.



##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FunctionBinder.java:
##########
@@ -86,7 +88,7 @@ public Expression visitUnboundFunction(UnboundFunction 
unboundFunction, Expressi
                 .map(e -> e.accept(this, 
context)).collect(Collectors.toList()));
 
         // bind function
-        FunctionRegistry functionRegistry = 
context.cascadesContext.getConnectContext().getFunctionRegistry();
+        FunctionRegistry functionRegistry = 
Env.getCurrentEnv().getFunctionRegistry();

Review Comment:
   because the connect context also get registry from env. In replaying 
function phase, connect context is null, this way is to avoid npe.



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