[jira] [Created] (HIVE-6708) ConstantVectorExpression should create copies of data objects rather than referencing them

["Hari Sankar Sivarama Subramaniyan (JIRA)" <ji...@apache.org>]

Hari Sankar Sivarama Subramaniyan created HIVE-6708:
-------------------------------------------------------

             Summary: ConstantVectorExpression should create copies of data objects rather than referencing them
                 Key: HIVE-6708
                 URL: https://issues.apache.org/jira/browse/HIVE-6708
             Project: Hive
          Issue Type: Bug
            Reporter: Hari Sankar Sivarama Subramaniyan
            Assignee: Hari Sankar Sivarama Subramaniyan


1. ConstantVectorExpression vector should be updated for bytecolumnvectors and decimalColumnVectors. The current code changes the reference to the vector which might be shared across multiple columns

2. VectorizationContext.foldConstantsForUnaryExpression(ExprNodeDesc exprDesc) has a minor bug as to when to constant fold the expression.
The following code should replace the corresponding piece of code in the trunk.
..
    GenericUDF gudf = ((ExprNodeGenericFuncDesc) exprDesc).getGenericUDF();
    if (gudf instanceof GenericUDFOPNegative || gudf instanceof GenericUDFOPPositive
        || castExpressionUdfs.contains(gudf.getClass())
... 



--
This message was sent by Atlassian JIRA
(v6.2#6252)