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https://issues.apache.org/jira/browse/HIVE-12826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-12826:
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Summary: Vectorization: fix VectorUDAF* suspect isNull checks (was:
Vectorization: VectorUDAF* suspect isNull checks)
> Vectorization: fix VectorUDAF* suspect isNull checks
> ----------------------------------------------------
>
> Key: HIVE-12826
> URL: https://issues.apache.org/jira/browse/HIVE-12826
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 1.3.0, 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-12826.1.patch
>
>
> for isRepeating=true, checking isNull[selected[i]] might return incorrect
> results (without a heavy array fill of isNull).
> VectorUDAFSum/Min/Max/Avg and SumDecimal impls need to be reviewed for this
> pattern.
> {code}
> private void iterateHasNullsRepeatingSelectionWithAggregationSelection(
> VectorAggregationBufferRow[] aggregationBufferSets,
> int aggregateIndex,
> <ValueType> value,
> int batchSize,
> int[] selection,
> boolean[] isNull) {
>
> for (int i=0; i < batchSize; ++i) {
> if (!isNull[selection[i]]) {
> Aggregation myagg = getCurrentAggregationBuffer(
> aggregationBufferSets,
> aggregateIndex,
> i);
> myagg.sumValue(value);
> }
> }
> }
> {code}
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