[jira] [Updated] (HIVE-4533) vectorized NotCol operation does not handle short-circuit evaluation for NULL propagation correctly

["Eric Hanson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-4533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Hanson updated HIVE-4533:
------------------------------

    Summary: vectorized NotCol operation does not handle short-circuit evaluation for NULL propagation correctly  (was: vectorized NotNull operation does not handle short-circuit evaluation for NULL propagation correctly)
    
> vectorized NotCol operation does not handle short-circuit evaluation for NULL propagation correctly
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4533
>                 URL: https://issues.apache.org/jira/browse/HIVE-4533
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Eric Hanson
>
> See file NotCol.java in org.apache.hadoop.hive.ql.exec.vector.expressions.
> This code does not look at the selection vector so it may waste time propagating nulls if the batch has already been filtered. 
> A more serious problem is that it only copies over n entries. So if a filter has been applied, nulls my not be copied over when they should.
>     // handle NULLs
>     if (inputColVector.noNulls) {
>       outV.noNulls = true;
>     } else {
>       outV.noNulls = false;
>       if (inputColVector.isRepeating) {
>         outV.isNull[0] = inputColVector.isNull[0];
>       } else {
>         System.arraycopy(inputColVector.isNull, 0, outV.isNull, 0, n);
>       }
>     }

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