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https://issues.apache.org/jira/browse/DRILL-7307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16878841#comment-16878841
 ] 

ASF GitHub Bot commented on DRILL-7307:
---------------------------------------

vvysotskyi commented on pull request #1820: DRILL-7307: casthigh for decimal 
type can lead to the issues with VarDecimalHolder
URL: https://github.com/apache/drill/pull/1820#discussion_r300472041
 
 

 ##########
 File path: 
exec/java-exec/src/main/java/org/apache/drill/exec/expr/EvaluationVisitor.java
 ##########
 @@ -1126,327 +1131,159 @@ public HoldingContainer 
visitFunctionCall(FunctionCall e, ClassGenerator<?> gene
           + "It should have been converted to FunctionHolderExpression in 
materialization");
     }
 
-    @Override
-    public HoldingContainer 
visitFunctionHolderExpression(FunctionHolderExpression e, ClassGenerator<?> 
generator)
+    private <T> HoldingContainer visitExpression(T e, ClassGenerator<?> 
generator, GetHolderCall getHolder)
         throws RuntimeException {
       if (constantBoundaries.contains(e)) {
         generator.getMappingSet().enterConstant();
-        HoldingContainer c = super.visitFunctionHolderExpression(e, generator);
-        // generator.getMappingSet().exitConstant();
-        // return c;
-        return renderConstantExpression(generator, c);
+        HoldingContainer c = getHolder.call();
 
 Review comment:
   Please rename it to something more meaningful.
 
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> casthigh for decimal type can lead to the issues with VarDecimalHolder
> ----------------------------------------------------------------------
>
>                 Key: DRILL-7307
>                 URL: https://issues.apache.org/jira/browse/DRILL-7307
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Dmytriy Grinchenko
>            Assignee: Dmytriy Grinchenko
>            Priority: Critical
>             Fix For: 1.17.0
>
>
> The decimal cast may lead to issues with VarDercimal transformation and 
> issues at uml functions which using casthigh under the hood
> Example: 
> {code}
> apache drill> select casthigh(cast(1025.0 as decimal(28,8)));
> Error: SYSTEM ERROR: CompileException: Line 25, Column 60: "isSet" is neither 
> a method, a field, nor a member class of 
> "org.apache.drill.exec.expr.holders.VarDecimalHolder"
> Fragment 0:0
> Please, refer to logs for more information.
> {code}



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