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https://issues.apache.org/jira/browse/HIVE-13220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15215633#comment-15215633
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Matt McCline commented on HIVE-13220:
-------------------------------------
Now I understand. Thanks!
> Set isNull[i] = false for non-null decimal values in DecimalColumnVector
> ------------------------------------------------------------------------
>
> Key: HIVE-13220
> URL: https://issues.apache.org/jira/browse/HIVE-13220
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.1.0
> Reporter: Prasanth Jayachandran
> Assignee: Matt McCline
>
> When fixing HIVE-13083 noticed that for non-null decimal values, set function
> does not update the isNull state (isNull[i] should be set to false). Updating
> this state in DecimalColumnVector breaks all decimal vector filter
> expressions as the filter expression can change state on it's own.
> {code}
> System.arraycopy(inputIsNull, 0, outputIsNull, 0, n);
> for(int i = 0; i != n; i++) {
> // The following may override a "false" null setting if an error or
> overflow occurs.
> DecimalUtil.addChecked(i, vector[i], value, outputColVector);
> }
> {code}
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