Eric Hanson created HIVE-6186:
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Summary: error in vectorized Column-Column comparison filter for
repeating case
Key: HIVE-6186
URL: https://issues.apache.org/jira/browse/HIVE-6186
Project: Hive
Issue Type: Sub-task
Components: Query Processor
Affects Versions: 0.13.0
Reporter: Eric Hanson
FilterColumnCompareColumn.txt contains this code:
} else if (inputColVector1.isRepeating && inputColVector2.isRepeating) {
if (nullPos1[0] || nullPos2[0]) {
batch.size = 0;
}
This code examines nullPos1[0] and nullPos2[0] without checking that
noNulls==false for the appropriate vector. This could lead to incorrect results.
We should review the case analysis for this template more generally to make
sure that all combinations are covered:
left.noNulls right.noNulls
T T
F T
T F
F F
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